[SECURITY] [DLA 3145-1] git security update

Debian LTS Advisory DLA-3145-1 [email protected]
https://www.debian.org/lts/security/ Markus Koschany
October 11, 2022 https://wiki.debian.org/LTS

Package : git
Version : 1:2.20.1-2+deb10u4
CVE ID : CVE-2021-21300 CVE-2021-40330
Debian Bug : 985120

Several security vulnerabilities have been discovered in Git, a fast, scalable,
distributed revision control system, which may affect multi-user systems.

CVE-2021-21300

A specially crafted repository that contains symbolic links as well as
files using a clean/smudge filter such as Git LFS, may cause just-checked
out script to be executed while cloning onto a case-insensitive file system
such as NTFS, HFS+ or APFS (i.e. the default file systems on Windows and
macOS).

CVE-2021-40330

git_connect_git in connect.c allows a repository path to contain a newline
character, which may result in unexpected cross-protocol requests, as
demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1
substring.

For Debian 10 buster, these problems have been fixed in version
1:2.20.1-2+deb10u4.

We recommend that you upgrade your git packages.

For the detailed security status of git please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/git

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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