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45496ad190
- Update from version 9.3p1 to 9.3p2
- Update of rootfile not required
- Changelog
9.3p2 (2023-07-19)
This release fixes a security bug.
Security
Fix CVE-2023-38408 - a condition where specific libaries loaded via
ssh-agent(1)'s PKCS#11 support could be abused to achieve remote
code execution via a forwarded agent socket if the following
conditions are met:
* Exploitation requires the presence of specific libraries on
the victim system.
* Remote exploitation requires that the agent was forwarded
to an attacker-controlled system.
Exploitation can also be prevented by starting ssh-agent(1) with an
empty PKCS#11/FIDO allowlist (ssh-agent -P '') or by configuring
an allowlist that contains only specific provider libraries.
This vulnerability was discovered and demonstrated to be exploitable
by the Qualys Security Advisory team.
In addition to removing the main precondition for exploitation,
this release removes the ability for remote ssh-agent(1) clients
to load PKCS#11 modules by default (see below).
Potentially-incompatible changes
* ssh-agent(8): the agent will now refuse requests to load PKCS#11
modules issued by remote clients by default. A flag has been added
to restore the previous behaviour "-Oallow-remote-pkcs11".
Note that ssh-agent(8) depends on the SSH client to identify
requests that are remote. The OpenSSH >=8.9 ssh(1) client does
this, but forwarding access to an agent socket using other tools
may circumvent this restriction.
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
95 lines
3.6 KiB
Plaintext
95 lines
3.6 KiB
Plaintext
###############################################################################
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# #
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# IPFire.org - A linux based firewall #
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# Copyright (C) 2007-2023 IPFire Team <info@ipfire.org> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <http://www.gnu.org/licenses/>. #
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# #
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###############################################################################
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###############################################################################
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# Definitions
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###############################################################################
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include Config
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VER = 9.3p2
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THISAPP = openssh-$(VER)
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DL_FILE = $(THISAPP).tar.gz
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DL_FROM = $(URL_IPFIRE)
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DIR_APP = $(DIR_SRC)/$(THISAPP)
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TARGET = $(DIR_INFO)/$(THISAPP)
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###############################################################################
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# Top-level Rules
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###############################################################################
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objects = $(DL_FILE)
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$(DL_FILE) = $(DL_FROM)/$(DL_FILE)
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$(DL_FILE)_BLAKE2 = 38f8d4ada263112b318fafccabf0a33a004d8290a867434004eb3d37127c9bdabe6e0225fca9d6d68fb54338fec81dcc9313ca7c91d3a033311db44174dc9f6f
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install : $(TARGET)
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check : $(patsubst %,$(DIR_CHK)/%,$(objects))
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download :$(patsubst %,$(DIR_DL)/%,$(objects))
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b2 : $(subst %,%_BLAKE2,$(objects))
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###############################################################################
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# Downloading, checking, b2sum
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###############################################################################
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$(patsubst %,$(DIR_CHK)/%,$(objects)) :
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@$(CHECK)
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$(patsubst %,$(DIR_DL)/%,$(objects)) :
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@$(LOAD)
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$(subst %,%_BLAKE2,$(objects)) :
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@$(B2SUM)
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###############################################################################
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# Installation Details
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###############################################################################
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$(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
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@$(PREBUILD)
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@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar zxf $(DIR_DL)/$(DL_FILE)
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cd $(DIR_APP) && sed -i "s/lkrb5 -ldes/lkrb5/" configure
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cd $(DIR_APP) && ./configure \
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--prefix=/usr \
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--sysconfdir=/etc/ssh \
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--libexecdir=/usr/lib/openssh \
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--with-md5-passwords \
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--with-privsep-path=/var/empty \
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--with-superuser-path=/sbin:/usr/sbin:/bin:/usr/bin
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cd $(DIR_APP) && make $(MAKETUNING)
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cd $(DIR_APP) && make install
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# install custom OpenSSH server configuration
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install -v -m 644 $(DIR_SRC)/config/ssh/sshd_config \
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/etc/ssh/sshd_config
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# install custom OpenSSH client configuration
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install -v -m 644 $(DIR_SRC)/config/ssh/ssh_config \
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/etc/ssh/ssh_config
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@rm -rf $(DIR_APP)
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@$(POSTBUILD)
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