-------------------------------------------------------------------------Debian LTS Advisory DLA-3145-1                debian-lts@lists.debian.org
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/source-package/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