Headline
Ubuntu Security Notice USN-6050-1
Ubuntu Security Notice 6050-1 - It was discovered that Git incorrectly handled certain commands. An attacker could possibly use this issue to overwriting some paths. Maxime Escourbiac and Yassine BENGANA discovered that Git incorrectly handled some gettext machinery. An attacker could possibly use this issue to allows the malicious placement of crafted messages. Andre Baptista and Vitor Pinho discovered that Git incorrectly handled certain configurations. An attacker could possibly use this issue to arbitrary configuration injection.
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Ubuntu Security Notice USN-6050-1
May 01, 2023
git vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 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 commands.
An attacker could possibly use this issue to overwriting some paths.
(CVE-2023-25652)
Maxime Escourbiac and Yassine BENGANA discovered that Git incorrectly
handled some gettext machinery. An attacker could possibly use this issue
to allows the malicious placement of crafted messages. (CVE-2023-25815)
André Baptista and Vítor Pinho discovered that Git incorrectly handled
certain configurations. An attacker could possibly use this issue
to arbitrary configuration injection. (CVE-2023-29007)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
git 1:2.39.2-1ubuntu1.1
Ubuntu 22.10:
git 1:2.37.2-1ubuntu1.5
Ubuntu 22.04 LTS:
git 1:2.34.1-1ubuntu1.9
Ubuntu 20.04 LTS:
git 1:2.25.1-1ubuntu3.11
Ubuntu 18.04 LTS:
git 1:2.17.1-1ubuntu0.18
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6050-1
CVE-2023-25652, CVE-2023-25815, CVE-2023-29007
Package Information:
https://launchpad.net/ubuntu/+source/git/1:2.39.2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/git/1:2.37.2-1ubuntu1.5
https://launchpad.net/ubuntu/+source/git/1:2.34.1-1ubuntu1.9
https://launchpad.net/ubuntu/+source/git/1:2.25.1-1ubuntu3.11
https://launchpad.net/ubuntu/+source/git/1:2.17.1-1ubuntu0.18
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In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function's implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\mingw64\share\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\` (and since `C:\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1. This vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It do...
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In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function's implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\mingw64\share\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\` (and since `C:\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1. This vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It do...
Git is a revision control system. Prior to versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, by feeding specially crafted input to `git apply --reject`, a path outside the working tree can be overwritten with partially controlled contents (corresponding to the rejected hunk(s) from the given patch). A fix is available in versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1. As a workaround, avoid using `git apply` with `--reject` when applying patches from an untrusted source. Use `git apply --stat` to inspect a patch before applying; avoid applying one that create a conflict where a link corresponding to the `*.rej` file exists.