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Revert "pcre: Fix more buffer overflows"
This reverts commit b62425e3e3.
This commit is contained in:
Michael Tremer
@@ -1 +0,0 @@
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../../../common/pcre
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3
lfs/pcre
3
lfs/pcre
@@ -72,9 +72,6 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
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@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar axf $(DIR_DL)/$(DL_FILE)
|
@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar axf $(DIR_DL)/$(DL_FILE)
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cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-buffer-overflow-for-named-recursive-back-referen.patch
|
cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-buffer-overflow-for-named-recursive-back-referen.patch
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cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-buffer-overflow-for-forward-reference-within-bac.patch
|
cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-buffer-overflow-for-forward-reference-within-bac.patch
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cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-another-buffer-overflow.patch
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cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-buffer-overflow-for-named-references-in-situatio.patch
|
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cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/pcre-8.37-Fix-named-forward-reference-to-duplicate-group-numbe.patch
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cd $(DIR_APP) && ./configure \
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cd $(DIR_APP) && ./configure \
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--prefix=/usr \
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--prefix=/usr \
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--disable-static \
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--disable-static \
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@@ -1,110 +0,0 @@
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From f6efcf125123199d446c5561266c3c3846ed9f30 Mon Sep 17 00:00:00 2001
|
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From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
|
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Date: Wed, 3 Jun 2015 16:51:59 +0000
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Subject: [PATCH] Fix another buffer overflow.
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Ported to 8.37:
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commit 225f0d5eb16c7a26591a1e3f286c7476907b5a6a
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Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
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Date: Wed Jun 3 16:51:59 2015 +0000
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|
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Fix another buffer overflow.
|
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|
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git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1562 2f5784b3-3f2a-0410-8824-cb99058d5e15
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
|
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pcre_compile.c | 7 ++++++-
|
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testdata/testinput2 | 2 ++
|
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testdata/testoutput11-16 | 2 +-
|
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testdata/testoutput11-32 | 2 +-
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testdata/testoutput11-8 | 2 +-
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testdata/testoutput2 | 2 ++
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6 files changed, 13 insertions(+), 4 deletions(-)
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diff --git a/pcre_compile.c b/pcre_compile.c
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index 8b4aaef..f5d2384 100644
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--- a/pcre_compile.c
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+++ b/pcre_compile.c
|
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@@ -7210,7 +7210,12 @@ for (;; ptr++)
|
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real compile this will be picked up and the reference wrapped with
|
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OP_ONCE to make it atomic, so we must space in case this occurs. */
|
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|
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- if (recno == 0) *lengthptr += 2 + 2*LINK_SIZE;
|
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+ /* In fact, this can happen for a non-forward reference because
|
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+ another group with the same number might be created later. This
|
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+ issue is fixed "properly" in PCRE2. As PCRE1 is now in maintenance
|
|
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+ only mode, we finesse the bug by allowing more memory always. */
|
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+
|
|
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+ /* if (recno == 0) */ *lengthptr += 2 + 2*LINK_SIZE;
|
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}
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|
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/* In the real compile, search the name table. We check the name
|
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diff --git a/testdata/testinput2 b/testdata/testinput2
|
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index 5cc9ce6..e12de3a 100644
|
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--- a/testdata/testinput2
|
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+++ b/testdata/testinput2
|
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@@ -4156,4 +4156,6 @@ backtracking verbs. --/
|
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|
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/(?=di(?<=(?1))|(?=(.))))/
|
|
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|
|
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+"(?J:(?|(?'R')(\k'R')|((?'R'))))"
|
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+
|
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/-- End of testinput2 --/
|
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diff --git a/testdata/testoutput11-16 b/testdata/testoutput11-16
|
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index 422f2ad..e222e7c 100644
|
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--- a/testdata/testoutput11-16
|
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+++ b/testdata/testoutput11-16
|
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@@ -231,7 +231,7 @@ Memory allocation (code space): 73
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------------------------------------------------------------------
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|
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/(?P<a>a)...(?P=a)bbb(?P>a)d/BM
|
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-Memory allocation (code space): 61
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+Memory allocation (code space): 77
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------------------------------------------------------------------
|
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0 24 Bra
|
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2 5 CBra 1
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diff --git a/testdata/testoutput11-32 b/testdata/testoutput11-32
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index d953ec8..9a80ec9 100644
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--- a/testdata/testoutput11-32
|
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+++ b/testdata/testoutput11-32
|
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@@ -231,7 +231,7 @@ Memory allocation (code space): 155
|
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------------------------------------------------------------------
|
|
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|
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/(?P<a>a)...(?P=a)bbb(?P>a)d/BM
|
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-Memory allocation (code space): 125
|
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+Memory allocation (code space): 157
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------------------------------------------------------------------
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0 24 Bra
|
|
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2 5 CBra 1
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diff --git a/testdata/testoutput11-8 b/testdata/testoutput11-8
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index 6ec18ec..3adaca2 100644
|
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--- a/testdata/testoutput11-8
|
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+++ b/testdata/testoutput11-8
|
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@@ -231,7 +231,7 @@ Memory allocation (code space): 45
|
|
||||||
------------------------------------------------------------------
|
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||||||
|
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||||||
/(?P<a>a)...(?P=a)bbb(?P>a)d/BM
|
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-Memory allocation (code space): 38
|
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+Memory allocation (code space): 50
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------------------------------------------------------------------
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0 30 Bra
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3 7 CBra 1
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diff --git a/testdata/testoutput2 b/testdata/testoutput2
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index 4decb8d..5bad26c 100644
|
|
||||||
--- a/testdata/testoutput2
|
|
||||||
+++ b/testdata/testoutput2
|
|
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@@ -14428,4 +14428,6 @@ Failed: lookbehind assertion is not fixed length at offset 17
|
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||||||
/(?=di(?<=(?1))|(?=(.))))/
|
|
||||||
Failed: unmatched parentheses at offset 23
|
|
||||||
|
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||||||
+"(?J:(?|(?'R')(\k'R')|((?'R'))))"
|
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+
|
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||||||
/-- End of testinput2 --/
|
|
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--
|
|
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2.4.3
|
|
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|
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@@ -1,190 +0,0 @@
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|||||||
From b3f0b0dd971314df8f865e221aa1a88e75d6d1a6 Mon Sep 17 00:00:00 2001
|
|
||||||
From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
|
|
||||||
Date: Wed, 5 Aug 2015 15:38:32 +0000
|
|
||||||
Subject: [PATCH] Fix buffer overflow for named references in (?| situations.
|
|
||||||
MIME-Version: 1.0
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|
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Content-Type: text/plain; charset=UTF-8
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||||||
Content-Transfer-Encoding: 8bit
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|
||||||
|
|
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Ported for 8.37:
|
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|
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commit 7af8e8717def179fd7b69e173abd347c1a3547cb
|
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Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
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Date: Wed Aug 5 15:38:32 2015 +0000
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Fix buffer overflow for named references in (?| situations.
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|
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git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1585 2f5784b3-3f2a-0410-8824-cb99058d5e15
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|
|
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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pcre_compile.c | 74 ++++++++++++++++++++++++++++++----------------------
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pcre_internal.h | 1 +
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testdata/testinput2 | 2 ++
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testdata/testoutput2 | 2 ++
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4 files changed, 48 insertions(+), 31 deletions(-)
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|
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diff --git a/pcre_compile.c b/pcre_compile.c
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index f5d2384..5fe5c1d 100644
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--- a/pcre_compile.c
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+++ b/pcre_compile.c
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@@ -6641,6 +6641,7 @@ for (;; ptr++)
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/* ------------------------------------------------------------ */
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case CHAR_VERTICAL_LINE: /* Reset capture count for each branch */
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reset_bracount = TRUE;
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+ cd->dupgroups = TRUE; /* Record (?| encountered */
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/* Fall through */
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|
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/* ------------------------------------------------------------ */
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@@ -7151,7 +7152,8 @@ for (;; ptr++)
|
|
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if (lengthptr != NULL)
|
|
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{
|
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named_group *ng;
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|
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-
|
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+ recno = 0;
|
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+
|
|
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if (namelen == 0)
|
|
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{
|
|
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*errorcodeptr = ERR62;
|
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@@ -7168,32 +7170,6 @@ for (;; ptr++)
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goto FAILED;
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}
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|
|
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- /* The name table does not exist in the first pass; instead we must
|
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- scan the list of names encountered so far in order to get the
|
|
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- number. If the name is not found, set the value to 0 for a forward
|
|
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- reference. */
|
|
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-
|
|
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- recno = 0;
|
|
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- ng = cd->named_groups;
|
|
||||||
- for (i = 0; i < cd->names_found; i++, ng++)
|
|
||||||
- {
|
|
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- if (namelen == ng->length &&
|
|
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- STRNCMP_UC_UC(name, ng->name, namelen) == 0)
|
|
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- {
|
|
||||||
- open_capitem *oc;
|
|
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- recno = ng->number;
|
|
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- if (is_recurse) break;
|
|
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- for (oc = cd->open_caps; oc != NULL; oc = oc->next)
|
|
||||||
- {
|
|
||||||
- if (oc->number == recno)
|
|
||||||
- {
|
|
||||||
- oc->flag = TRUE;
|
|
||||||
- break;
|
|
||||||
- }
|
|
||||||
- }
|
|
||||||
- }
|
|
||||||
- }
|
|
||||||
-
|
|
||||||
/* Count named back references. */
|
|
||||||
|
|
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if (!is_recurse) cd->namedrefcount++;
|
|
||||||
@@ -7215,7 +7191,44 @@ for (;; ptr++)
|
|
||||||
issue is fixed "properly" in PCRE2. As PCRE1 is now in maintenance
|
|
||||||
only mode, we finesse the bug by allowing more memory always. */
|
|
||||||
|
|
||||||
- /* if (recno == 0) */ *lengthptr += 2 + 2*LINK_SIZE;
|
|
||||||
+ *lengthptr += 2 + 2*LINK_SIZE;
|
|
||||||
+
|
|
||||||
+ /* It is even worse than that. The current reference may be to an
|
|
||||||
+ existing named group with a different number (so apparently not
|
|
||||||
+ recursive) but which later on is also attached to a group with the
|
|
||||||
+ current number. This can only happen if $(| has been previous
|
|
||||||
+ encountered. In that case, we allow yet more memory, just in case.
|
|
||||||
+ (Again, this is fixed "properly" in PCRE2. */
|
|
||||||
+
|
|
||||||
+ if (cd->dupgroups) *lengthptr += 2 + 2*LINK_SIZE;
|
|
||||||
+
|
|
||||||
+ /* Otherwise, check for recursion here. The name table does not exist
|
|
||||||
+ in the first pass; instead we must scan the list of names encountered
|
|
||||||
+ so far in order to get the number. If the name is not found, leave
|
|
||||||
+ the value of recno as 0 for a forward reference. */
|
|
||||||
+
|
|
||||||
+ else
|
|
||||||
+ {
|
|
||||||
+ ng = cd->named_groups;
|
|
||||||
+ for (i = 0; i < cd->names_found; i++, ng++)
|
|
||||||
+ {
|
|
||||||
+ if (namelen == ng->length &&
|
|
||||||
+ STRNCMP_UC_UC(name, ng->name, namelen) == 0)
|
|
||||||
+ {
|
|
||||||
+ open_capitem *oc;
|
|
||||||
+ recno = ng->number;
|
|
||||||
+ if (is_recurse) break;
|
|
||||||
+ for (oc = cd->open_caps; oc != NULL; oc = oc->next)
|
|
||||||
+ {
|
|
||||||
+ if (oc->number == recno)
|
|
||||||
+ {
|
|
||||||
+ oc->flag = TRUE;
|
|
||||||
+ break;
|
|
||||||
+ }
|
|
||||||
+ }
|
|
||||||
+ }
|
|
||||||
+ }
|
|
||||||
+ }
|
|
||||||
}
|
|
||||||
|
|
||||||
/* In the real compile, search the name table. We check the name
|
|
||||||
@@ -7262,8 +7275,6 @@ for (;; ptr++)
|
|
||||||
for (i++; i < cd->names_found; i++)
|
|
||||||
{
|
|
||||||
if (STRCMP_UC_UC(slot + IMM2_SIZE, cslot + IMM2_SIZE) != 0) break;
|
|
||||||
-
|
|
||||||
-
|
|
||||||
count++;
|
|
||||||
cslot += cd->name_entry_size;
|
|
||||||
}
|
|
||||||
@@ -9189,6 +9200,7 @@ cd->names_found = 0;
|
|
||||||
cd->name_entry_size = 0;
|
|
||||||
cd->name_table = NULL;
|
|
||||||
cd->dupnames = FALSE;
|
|
||||||
+cd->dupgroups = FALSE;
|
|
||||||
cd->namedrefcount = 0;
|
|
||||||
cd->start_code = cworkspace;
|
|
||||||
cd->hwm = cworkspace;
|
|
||||||
@@ -9223,7 +9235,7 @@ if (errorcode != 0) goto PCRE_EARLY_ERROR_RETURN;
|
|
||||||
|
|
||||||
DPRINTF(("end pre-compile: length=%d workspace=%d\n", length,
|
|
||||||
(int)(cd->hwm - cworkspace)));
|
|
||||||
-
|
|
||||||
+
|
|
||||||
if (length > MAX_PATTERN_SIZE)
|
|
||||||
{
|
|
||||||
errorcode = ERR20;
|
|
||||||
diff --git a/pcre_internal.h b/pcre_internal.h
|
|
||||||
index dd0ac7f..7ca6020 100644
|
|
||||||
--- a/pcre_internal.h
|
|
||||||
+++ b/pcre_internal.h
|
|
||||||
@@ -2446,6 +2446,7 @@ typedef struct compile_data {
|
|
||||||
BOOL had_pruneorskip; /* (*PRUNE) or (*SKIP) encountered */
|
|
||||||
BOOL check_lookbehind; /* Lookbehinds need later checking */
|
|
||||||
BOOL dupnames; /* Duplicate names exist */
|
|
||||||
+ BOOL dupgroups; /* Duplicate groups exist: (?| found */
|
|
||||||
BOOL iscondassert; /* Next assert is a condition */
|
|
||||||
int nltype; /* Newline type */
|
|
||||||
int nllen; /* Newline string length */
|
|
||||||
diff --git a/testdata/testinput2 b/testdata/testinput2
|
|
||||||
index e12de3a..8e044f8 100644
|
|
||||||
--- a/testdata/testinput2
|
|
||||||
+++ b/testdata/testinput2
|
|
||||||
@@ -4158,4 +4158,6 @@ backtracking verbs. --/
|
|
||||||
|
|
||||||
"(?J:(?|(?'R')(\k'R')|((?'R'))))"
|
|
||||||
|
|
||||||
+/(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R')))/
|
|
||||||
+
|
|
||||||
/-- End of testinput2 --/
|
|
||||||
diff --git a/testdata/testoutput2 b/testdata/testoutput2
|
|
||||||
index 5bad26c..6019425 100644
|
|
||||||
--- a/testdata/testoutput2
|
|
||||||
+++ b/testdata/testoutput2
|
|
||||||
@@ -14430,4 +14430,6 @@ Failed: unmatched parentheses at offset 23
|
|
||||||
|
|
||||||
"(?J:(?|(?'R')(\k'R')|((?'R'))))"
|
|
||||||
|
|
||||||
+/(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R')))/
|
|
||||||
+
|
|
||||||
/-- End of testinput2 --/
|
|
||||||
--
|
|
||||||
2.4.3
|
|
||||||
|
|
||||||
@@ -1,98 +0,0 @@
|
|||||||
From 83ed574998fe7b844b98ab7cd56291068feb9e31 Mon Sep 17 00:00:00 2001
|
|
||||||
From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
|
|
||||||
Date: Sat, 16 May 2015 11:05:40 +0000
|
|
||||||
Subject: [PATCH] Fix named forward reference to duplicate group number
|
|
||||||
overflow bug.
|
|
||||||
MIME-Version: 1.0
|
|
||||||
Content-Type: text/plain; charset=UTF-8
|
|
||||||
Content-Transfer-Encoding: 8bit
|
|
||||||
|
|
||||||
Port to 8.37:
|
|
||||||
|
|
||||||
commit 2fa78aa4e42bcebf2d616c4ee89c012f29dc3447
|
|
||||||
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
|
|
||||||
Date: Sat May 16 11:05:40 2015 +0000
|
|
||||||
|
|
||||||
Fix named forward reference to duplicate group number overflow bug.
|
|
||||||
|
|
||||||
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1559 2f5784b3-3f2a-0410-8824-cb99058d5e15
|
|
||||||
|
|
||||||
Signed-off-by: Petr Písař <ppisar@redhat.com>
|
|
||||||
---
|
|
||||||
pcre_compile.c | 24 ++++++++++++++++--------
|
|
||||||
testdata/testinput1 | 3 +++
|
|
||||||
testdata/testoutput1 | 5 +++++
|
|
||||||
3 files changed, 24 insertions(+), 8 deletions(-)
|
|
||||||
|
|
||||||
diff --git a/pcre_compile.c b/pcre_compile.c
|
|
||||||
index b66b1f6..8b4aaef 100644
|
|
||||||
--- a/pcre_compile.c
|
|
||||||
+++ b/pcre_compile.c
|
|
||||||
@@ -7183,15 +7183,15 @@ for (;; ptr++)
|
|
||||||
open_capitem *oc;
|
|
||||||
recno = ng->number;
|
|
||||||
if (is_recurse) break;
|
|
||||||
- for (oc = cd->open_caps; oc != NULL; oc = oc->next)
|
|
||||||
- {
|
|
||||||
- if (oc->number == recno)
|
|
||||||
- {
|
|
||||||
- oc->flag = TRUE;
|
|
||||||
+ for (oc = cd->open_caps; oc != NULL; oc = oc->next)
|
|
||||||
+ {
|
|
||||||
+ if (oc->number == recno)
|
|
||||||
+ {
|
|
||||||
+ oc->flag = TRUE;
|
|
||||||
break;
|
|
||||||
- }
|
|
||||||
- }
|
|
||||||
- }
|
|
||||||
+ }
|
|
||||||
+ }
|
|
||||||
+ }
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Count named back references. */
|
|
||||||
@@ -7203,6 +7203,14 @@ for (;; ptr++)
|
|
||||||
16-bit data item. */
|
|
||||||
|
|
||||||
*lengthptr += IMM2_SIZE;
|
|
||||||
+
|
|
||||||
+ /* If this is a forward reference and we are within a (?|...) group,
|
|
||||||
+ the reference may end up as the number of a group which we are
|
|
||||||
+ currently inside, that is, it could be a recursive reference. In the
|
|
||||||
+ real compile this will be picked up and the reference wrapped with
|
|
||||||
+ OP_ONCE to make it atomic, so we must space in case this occurs. */
|
|
||||||
+
|
|
||||||
+ if (recno == 0) *lengthptr += 2 + 2*LINK_SIZE;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* In the real compile, search the name table. We check the name
|
|
||||||
diff --git a/testdata/testinput1 b/testdata/testinput1
|
|
||||||
index 73c2f4d..8379ce0 100644
|
|
||||||
--- a/testdata/testinput1
|
|
||||||
+++ b/testdata/testinput1
|
|
||||||
@@ -5730,4 +5730,7 @@ AbcdCBefgBhiBqz
|
|
||||||
"(?1)(?#?'){8}(a)"
|
|
||||||
baaaaaaaaac
|
|
||||||
|
|
||||||
+"(?|(\k'Pm')|(?'Pm'))"
|
|
||||||
+ abcd
|
|
||||||
+
|
|
||||||
/-- End of testinput1 --/
|
|
||||||
diff --git a/testdata/testoutput1 b/testdata/testoutput1
|
|
||||||
index 0a53fd0..e852ab9 100644
|
|
||||||
--- a/testdata/testoutput1
|
|
||||||
+++ b/testdata/testoutput1
|
|
||||||
@@ -9429,4 +9429,9 @@ No match
|
|
||||||
0: aaaaaaaaa
|
|
||||||
1: a
|
|
||||||
|
|
||||||
+"(?|(\k'Pm')|(?'Pm'))"
|
|
||||||
+ abcd
|
|
||||||
+ 0:
|
|
||||||
+ 1:
|
|
||||||
+
|
|
||||||
/-- End of testinput1 --/
|
|
||||||
--
|
|
||||||
2.4.3
|
|
||||||
|
|
||||||
Reference in New Issue
Block a user