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Ubuntu Security Notice USN-6793-1
May 28, 2024

git vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Git.

Software Description:
- git: fast, scalable, distributed revision control system

Details:

It was discovered that Git incorrectly handled certain submodules.
An attacker could possibly use this issue to execute arbitrary code.
This issue was fixed in Ubuntu 22.04 LTS, Ubuntu 23.10 and Ubuntu 24.04 LTS.
(CVE-2024-32002)

It was discovered that Git incorrectly handled certain cloned repositories.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2024-32004)

It was discovered that Git incorrectly handled local clones with hardlinked
files/directories. An attacker could possibly use this issue to place a
specialized repository on their target's local system. (CVE-2024-32020)

It was discovered that Git incorrectly handled certain symlinks. An attacker
could possibly use this issue to impact availability and integrity
creating hardlinked arbitrary files into users repository's objects/directory.
(CVE-2024-32021)

It was discovered that Git incorrectly handled certain cloned repositories.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2024-32465)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
  git                             1:2.43.0-1ubuntu7.1

Ubuntu 23.10
  git                             1:2.40.1-1ubuntu1.1

Ubuntu 22.04 LTS
  git                             1:2.34.1-1ubuntu1.11

Ubuntu 20.04 LTS
  git                             1:2.25.1-1ubuntu3.12

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-6793-1
  CVE-2024-32002, CVE-2024-32004, CVE-2024-32020, CVE-2024-32021,
  CVE-2024-32465

Package Information:
  https://launchpad.net/ubuntu/+source/git/1:2.43.0-1ubuntu7.1
  https://launchpad.net/ubuntu/+source/git/1:2.40.1-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/git/1:2.34.1-1ubuntu1.11
  https://launchpad.net/ubuntu/+source/git/1:2.25.1-1ubuntu3.12