Debian: DLA-3589-1 Critical: Python-Git Local File Inclusion Threat

In order to resolve some git references, python-git reads files from the
".git" directory but, due to improper location check, an attacker can
pass a file located outside this directory thereby making python-git
read arbitrary file on the system.

It remains unclear whether the attacker can gain access to actual file
content, but denial of service can be achieved by passing a large or
infinite file such as /dev/random.

For Debian 10 buster, this problem has been fixed in version
2.1.11-1+deb10u2.

We recommend that you upgrade your python-git packages.

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