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Gentoo Linux 201709-10 Normal: Git Command Injection Exploit

gentoo
Calendar Grey September 17, 2017
Dist Gentoo Esm H88
A critical flaw in Git could lead to unauthorized command execution. Ensure you upgrade to version 2.13.5 or later to safeguard your system.
A command injection vulnerability in Git may allow remote attackers to execute arbitrary code.

Summary

Specially crafted 'ssh://...' URLs may allow the owner of the repository to execute arbitrary commands on client's machine if those commands are already installed on the client's system. This is especially dangerous when the third-party repository has one or more submodules with specially crafted 'ssh://...' URLs. Each time the repository is recursively cloned or submodules are updated the payload will be triggered.

Topics%20covered

Topics Covered

security advisory gentoo remote code execution command injection normal git

Resolution

All Git users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-vcs/git-2.13.5"

References

[ 1 ] CVE-2017-1000117 https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000117 [ 2 ] Mailing list ARChives (MARC) Git Team Announce https://marc.info/?l=git&m=150238802328673&w=2

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201709-10
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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.

Severity: Normal
Title: Git: Command injection
Date: September 17, 2017
Bugs: #627488
ID: 201709-10

Topics%20covered

Topics Covered

security advisory gentoo remote code execution command injection normal git

Synopsis

A command injection vulnerability in Git may allow remote attackers to execute arbitrary code.

Background

Git is a small and fast distributed version control system designed to handle small and large projects.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-vcs/git < 2.13.5 >= 2.13.5

Impact

===== A remote attacker, by enticing a user to clone a specially crafted repository, could possibly execute arbitrary code with the privileges of the process.

Workaround

There is no known workaround at this time.