Headline
Red Hat Security Advisory 2023-0628-01
Red Hat Security Advisory 2023-0628-01 - Git is a distributed revision control system with a decentralized architecture. As opposed to centralized version control systems with a client-server model, Git ensures that each working copy of a Git repository is an exact copy with complete revision history. This not only allows the user to work on and contribute to projects without the need to have permission to push the changes to their official repositories, but also makes it possible for the user to work with no network connection. Issues addressed include heap overflow and integer overflow vulnerabilities.
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Red Hat Security Advisory
Synopsis: Important: git security update
Advisory ID: RHSA-2023:0628-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0628
Issue date: 2023-02-07
CVE Names: CVE-2022-23521 CVE-2022-41903
====================================================================
- Summary:
An update for git is now available for Red Hat Enterprise Linux 8.6
Extended Update Support.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
- Relevant releases/architectures:
Red Hat Enterprise Linux AppStream EUS (v.8.6) - aarch64, noarch, ppc64le, s390x, x86_64
- Description:
Git is a distributed revision control system with a decentralized
architecture. As opposed to centralized version control systems with a
client-server model, Git ensures that each working copy of a Git repository
is an exact copy with complete revision history. This not only allows the
user to work on and contribute to projects without the need to have
permission to push the changes to their official repositories, but also
makes it possible for the user to work with no network connection.
Security Fix(es):
git: gitattributes parsing integer overflow (CVE-2022-23521)
git: Heap overflow in
git archive
,git log --format
leading to RCE
(CVE-2022-41903)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
- Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
- Bugs fixed (https://bugzilla.redhat.com/):
2162055 - CVE-2022-23521 git: gitattributes parsing integer overflow
2162056 - CVE-2022-41903 git: Heap overflow in git archive
, git log --format
leading to RCE
- Package List:
Red Hat Enterprise Linux AppStream EUS (v.8.6):
Source:
git-2.31.1-3.el8_6.src.rpm
aarch64:
git-2.31.1-3.el8_6.aarch64.rpm
git-core-2.31.1-3.el8_6.aarch64.rpm
git-core-debuginfo-2.31.1-3.el8_6.aarch64.rpm
git-credential-libsecret-2.31.1-3.el8_6.aarch64.rpm
git-credential-libsecret-debuginfo-2.31.1-3.el8_6.aarch64.rpm
git-daemon-2.31.1-3.el8_6.aarch64.rpm
git-daemon-debuginfo-2.31.1-3.el8_6.aarch64.rpm
git-debuginfo-2.31.1-3.el8_6.aarch64.rpm
git-debugsource-2.31.1-3.el8_6.aarch64.rpm
git-subtree-2.31.1-3.el8_6.aarch64.rpm
noarch:
git-all-2.31.1-3.el8_6.noarch.rpm
git-core-doc-2.31.1-3.el8_6.noarch.rpm
git-email-2.31.1-3.el8_6.noarch.rpm
git-gui-2.31.1-3.el8_6.noarch.rpm
git-instaweb-2.31.1-3.el8_6.noarch.rpm
git-svn-2.31.1-3.el8_6.noarch.rpm
gitk-2.31.1-3.el8_6.noarch.rpm
gitweb-2.31.1-3.el8_6.noarch.rpm
perl-Git-2.31.1-3.el8_6.noarch.rpm
perl-Git-SVN-2.31.1-3.el8_6.noarch.rpm
ppc64le:
git-2.31.1-3.el8_6.ppc64le.rpm
git-core-2.31.1-3.el8_6.ppc64le.rpm
git-core-debuginfo-2.31.1-3.el8_6.ppc64le.rpm
git-credential-libsecret-2.31.1-3.el8_6.ppc64le.rpm
git-credential-libsecret-debuginfo-2.31.1-3.el8_6.ppc64le.rpm
git-daemon-2.31.1-3.el8_6.ppc64le.rpm
git-daemon-debuginfo-2.31.1-3.el8_6.ppc64le.rpm
git-debuginfo-2.31.1-3.el8_6.ppc64le.rpm
git-debugsource-2.31.1-3.el8_6.ppc64le.rpm
git-subtree-2.31.1-3.el8_6.ppc64le.rpm
s390x:
git-2.31.1-3.el8_6.s390x.rpm
git-core-2.31.1-3.el8_6.s390x.rpm
git-core-debuginfo-2.31.1-3.el8_6.s390x.rpm
git-credential-libsecret-2.31.1-3.el8_6.s390x.rpm
git-credential-libsecret-debuginfo-2.31.1-3.el8_6.s390x.rpm
git-daemon-2.31.1-3.el8_6.s390x.rpm
git-daemon-debuginfo-2.31.1-3.el8_6.s390x.rpm
git-debuginfo-2.31.1-3.el8_6.s390x.rpm
git-debugsource-2.31.1-3.el8_6.s390x.rpm
git-subtree-2.31.1-3.el8_6.s390x.rpm
x86_64:
git-2.31.1-3.el8_6.x86_64.rpm
git-core-2.31.1-3.el8_6.x86_64.rpm
git-core-debuginfo-2.31.1-3.el8_6.x86_64.rpm
git-credential-libsecret-2.31.1-3.el8_6.x86_64.rpm
git-credential-libsecret-debuginfo-2.31.1-3.el8_6.x86_64.rpm
git-daemon-2.31.1-3.el8_6.x86_64.rpm
git-daemon-debuginfo-2.31.1-3.el8_6.x86_64.rpm
git-debuginfo-2.31.1-3.el8_6.x86_64.rpm
git-debugsource-2.31.1-3.el8_6.x86_64.rpm
git-subtree-2.31.1-3.el8_6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
- References:
https://access.redhat.com/security/cve/CVE-2022-23521
https://access.redhat.com/security/cve/CVE-2022-41903
https://access.redhat.com/security/updates/classification/#important
- Contact:
The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2023 Red Hat, Inc.
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Ubuntu Security Notice 5810-1 - Markus Vervier and Eric Sesterhenn discovered that Git incorrectly handled certain gitattributes. An attacker could possibly use this issue to cause a crash or execute arbitrary code. Joern Schneeweisz discovered that Git incorrectly handled certain commands. An attacker could possibly use this issue to cause a crash or execute arbitrary code.
Ubuntu Security Notice 5810-1 - Markus Vervier and Eric Sesterhenn discovered that Git incorrectly handled certain gitattributes. An attacker could possibly use this issue to cause a crash or execute arbitrary code. Joern Schneeweisz discovered that Git incorrectly handled certain commands. An attacker could possibly use this issue to cause a crash or execute arbitrary code.
Git is distributed revision control system. `git log` can display commits in an arbitrary format using its `--format` specifiers. This functionality is also exposed to `git archive` via the `export-subst` gitattribute. When processing the padding operators, there is a integer overflow in `pretty.c::format_and_pad_commit()` where a `size_t` is stored improperly as an `int`, and then added as an offset to a `memcpy()`. This overflow can be triggered directly by a user running a command which invokes the commit formatting machinery (e.g., `git log --format=...`). It may also be triggered indirectly through git archive via the export-subst mechanism, which expands format specifiers inside of files within the repository during a git archive. This integer overflow can result in arbitrary heap writes, which may result in arbitrary code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. Users who are unable to u...