[gentoo-announce] [ GLSA 202104-01 ] Git: User-assisted execution of arbitrary code

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Severity: Normal Title: Git: User-assisted execution of arbitrary code Date: April 30, 2021 Bugs: #774678 ID: 202104-01
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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 ——————————————————————- 1 dev-vcs/git < 2.26.3 >= 2.26.3
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 ==========
[ 1 ] CVE-2021-21300 nvd.nist.gov/vuln/detail/CVE-2021-21300
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
security.gentoo.org/glsa/202104-01
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 bugs.gentoo.org.
License =======
Copyright 2021 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons – Attribution / Share Alike license.
creativecommons.org/licenses/by-sa/2.5