Debian 11: DLA-4031-1 moderate: git credential exposure

debian lts

January 28, 2025

Multiple vulnerabilities were discovered in git, a fast, scalable and distributed revision control system

Topics Covered

security advisory buffer overflow Debian git credential exposure

Summary

CVE-2024-50349

When Git asks for credentials via a terminal prompt (i.e. without
using any credential helper), it prints out the host name for which
the user is expected to provide a username and/or a password. At
this stage, any URL-encoded parts have been decoded already, and are
printed verbatim. This could allow attackers to craft URLs that
contain ANSI escape sequences that the terminal interpret to confuse
users e.g. into providing passwords for trusted Git hosting sites
when in fact they are then sent to untrusted sites that are under
the attacker's control.

CVE-2024-52006

Git defines a line-based protocol that is used to exchange
information between Git and Git credential helpers. Some ecosystems
(most notably, .NET and node.js) interpret single Carriage Return
characters as newlines, which renders the protections against
CVE-2020-5260 incomplete for credential helpers that treat Carriage
Returns in this way.