GLSA 202104-01: Git: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	Git: User-assisted execution of arbitrary code
Date:	04/30/2021
Bugs:	#774678
ID:	202104-01

Synopsis

A vulnerability has been found in Git that could allow a remote attacker to execute arbitrary code.

Background

Git is a distributed version control system designed.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-vcs/git	< 2.26.3	>= 2.26.3	All supported architectures

Description

It was discovered that Git could be fooled into running remote code during a clone on case-insensitive file systems with support for symbolic links, if Git is configured globally to apply delay-capable clean/smudge filters (such as Git LFS).

Impact

A remote attacker could entice a user to clone a specially crafted repository, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All Git users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-vcs/git-2.26.3"

References

CVE-2021-21300

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202104-01.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.