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OpenAdvisories
Medium ALAS2-2023-1984 2 CVEs

Moderate: git security update (Amazon Linux 2)

Published Mar 2, 2023 · Updated Mar 7, 2023

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2023-23946: Git, a revision control system, is vulnerable to path traversal prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8. By feeding a crafted input to `git apply`, a path outside the working tree can be overwritten as the user who is running `git apply`. A fix has been prepared and will appear in v2.39.2, v2.38.4, v2.37.6, v2.36.5, v2.35.7, v2.34.7, v2.33.7, v2.32.6, v2.31.7, and v2.30.8. As a workaround, use `git apply --stat` to inspect a patch before applying; avoid applying one that creates a symbolic link and then creates a file beyond the symbolic link. CVE-2023-22490: Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.

Fixed packages 18

ReleasePackageFixed in
Amazon Linux · 2 git 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-all 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-core 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-core-doc 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-credential-libsecret 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-cvs 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-daemon 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-debuginfo 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-email 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-gui 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-instaweb 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-p4 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-subtree 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 git-svn 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 gitk 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 gitweb 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 perl-Git 0:2.39.2-1.amzn2.0.1
Amazon Linux · 2 perl-Git-SVN 0:2.39.2-1.amzn2.0.1

Vulnerabilities 2

  • Medium 6.2
    CVE-2023-23946 Public exploit

    Git's `git apply` overwriting paths outside the working tree

    Git, a revision control system, is vulnerable to path traversal prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8. By feeding a crafted input to `git apply`, a path outside the working tree can be overwritten…

  • Medium 5.5
    CVE-2023-22490 Public exploit

    Git vulnerable to local clone-based data exfiltration with non-local transports

    Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local…

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-22490.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-23946.html