p PatchFirst

CVE-2022-39260

CVE-2022-39260 · Git vulnerable to Remote Code Execution via Heap overflow in `git shell`

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. In versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments into an array improperly uses an `int` to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code execution on a victim machine. Note that a victim must first allow access to `git shell` as a login shell in order to be vulnerable to this attack. This problem is patched in versions 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 and users are advised to upgrade to the latest version. Disabling `git shell` access via remote logins is a viable short-term workaround.

CVSS 8.5 · High · EPSS 4.0% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • git

    Versions
    • < 2.30.6: Affected
    • > 2.31.0, < 2.31.5: Affected
    • > 2.32.0, < 2.32.4: Affected
    • > 2.33.0, < 2.33.5: Affected
    • > 2.34.0, < 2.34.5: Affected
    • > 2.34.0, < 2.35.5: Affected
    • > 2.35.0, < 2.36.3: Affected
    • > 2.37.0, < 2.37.4: Affected

    No fix published

  • git Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:2.38.1-1

    Update to 1:2.38.1-1

  • git Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:2.38.1-1

    Update to 1:2.38.1-1

  • git Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:2.38.1-1

    Update to 1:2.38.1-1

  • git Ubuntu:Pro:16.04:LTS

    Versions
    • 1:2.5.0-1
    • 1:2.6.2-1
    • 1:2.6.3-1
    • 1:2.6.4-1
    • 1:2.7.0~rc3-1
    • 1:2.7.0-1
    • 1:2.7.3-0ubuntu1
    • 1:2.7.4-0ubuntu1
    • 1:2.7.4-0ubuntu1.1
    • 1:2.7.4-0ubuntu1.2
    • 1:2.7.4-0ubuntu1.3
    • 1:2.7.4-0ubuntu1.4
    • 1:2.7.4-0ubuntu1.5
    • 1:2.7.4-0ubuntu1.6
    • 1:2.7.4-0ubuntu1.7
    • 1:2.7.4-0ubuntu1.8
    • 1:2.7.4-0ubuntu1.9
    • 1:2.7.4-0ubuntu1.10
    • 1:2.7.4-0ubuntu1.10+esm1
    Affected ranges
    • ECOSYSTEM: < 1:2.7.4-0ubuntu1.10+esm3

    Update to 1:2.7.4-0ubuntu1.10+esm3

  • git Ubuntu:18.04:LTS

    Versions
    • 1:2.14.1-1ubuntu4
    • 1:2.15.1-1ubuntu2
    • 1:2.17.0-1ubuntu1
    • 1:2.17.1-1ubuntu0.1
    • 1:2.17.1-1ubuntu0.3
    • 1:2.17.1-1ubuntu0.4
    • 1:2.17.1-1ubuntu0.5
    • 1:2.17.1-1ubuntu0.6
    • 1:2.17.1-1ubuntu0.7
    • 1:2.17.1-1ubuntu0.8
    • 1:2.17.1-1ubuntu0.9
    • 1:2.17.1-1ubuntu0.10
    • 1:2.17.1-1ubuntu0.11
    • 1:2.17.1-1ubuntu0.12
    Affected ranges
    • ECOSYSTEM: < 1:2.17.1-1ubuntu0.13

    Update to 1:2.17.1-1ubuntu0.13

  • git Ubuntu:20.04:LTS

    Versions
    • 1:2.20.1-2ubuntu1
    • 1:2.24.0-1ubuntu1
    • 1:2.24.0-1ubuntu2
    • 1:2.25.0-1ubuntu1
    • 1:2.25.1-1ubuntu1
    • 1:2.25.1-1ubuntu2
    • 1:2.25.1-1ubuntu3
    • 1:2.25.1-1ubuntu3.1
    • 1:2.25.1-1ubuntu3.2
    • 1:2.25.1-1ubuntu3.3
    • 1:2.25.1-1ubuntu3.4
    • 1:2.25.1-1ubuntu3.5
    Affected ranges
    • ECOSYSTEM: < 1:2.25.1-1ubuntu3.6

    Update to 1:2.25.1-1ubuntu3.6

  • git Ubuntu:22.04:LTS

    Versions
    • 1:2.32.0-1ubuntu1
    • 1:2.33.1-1ubuntu1
    • 1:2.34.1-1ubuntu1
    • 1:2.34.1-1ubuntu1.1
    • 1:2.34.1-1ubuntu1.2
    • 1:2.34.1-1ubuntu1.4
    Affected ranges
    • ECOSYSTEM: < 1:2.34.1-1ubuntu1.5

    Update to 1:2.34.1-1ubuntu1.5

Original sources

Check your server →