Medium: git

Issue Overview:

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. (CVE-2023-22490)

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-2023-23946)

Affected Packages:

git

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update git to update your system.

New Packages:

aarch64:  
    git-2.39.2-1.amzn2.0.1.aarch64  
    git-core-2.39.2-1.amzn2.0.1.aarch64  
    git-credential-libsecret-2.39.2-1.amzn2.0.1.aarch64  
    git-daemon-2.39.2-1.amzn2.0.1.aarch64  
    git-debuginfo-2.39.2-1.amzn2.0.1.aarch64  
  
i686:  
    git-2.39.2-1.amzn2.0.1.i686  
    git-core-2.39.2-1.amzn2.0.1.i686  
    git-credential-libsecret-2.39.2-1.amzn2.0.1.i686  
    git-daemon-2.39.2-1.amzn2.0.1.i686  
    git-debuginfo-2.39.2-1.amzn2.0.1.i686  
  
noarch:  
    git-all-2.39.2-1.amzn2.0.1.noarch  
    git-core-doc-2.39.2-1.amzn2.0.1.noarch  
    git-cvs-2.39.2-1.amzn2.0.1.noarch  
    git-email-2.39.2-1.amzn2.0.1.noarch  
    gitk-2.39.2-1.amzn2.0.1.noarch  
    gitweb-2.39.2-1.amzn2.0.1.noarch  
    git-gui-2.39.2-1.amzn2.0.1.noarch  
    git-instaweb-2.39.2-1.amzn2.0.1.noarch  
    git-p4-2.39.2-1.amzn2.0.1.noarch  
    perl-Git-2.39.2-1.amzn2.0.1.noarch  
    perl-Git-SVN-2.39.2-1.amzn2.0.1.noarch  
    git-subtree-2.39.2-1.amzn2.0.1.noarch  
    git-svn-2.39.2-1.amzn2.0.1.noarch  
  
src:  
    git-2.39.2-1.amzn2.0.1.src  
  
x86_64:  
    git-2.39.2-1.amzn2.0.1.x86_64  
    git-core-2.39.2-1.amzn2.0.1.x86_64  
    git-credential-libsecret-2.39.2-1.amzn2.0.1.x86_64  
    git-daemon-2.39.2-1.amzn2.0.1.x86_64  
    git-debuginfo-2.39.2-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2023-22490, CVE-2023-23946

Mitre: CVE-2023-22490, CVE-2023-23946