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Mercurial vulnerable to arbitrary code injection

Critical severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated May 1, 2024

Package

pip mercurial (pip)

Affected versions

< 4.4.1

Patched versions

4.4.1

Description

In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script checked into the repository. Typical use of Mercurial prevents construction of such repositories, but they can be created programmatically.

References

Published by the National Vulnerability Database Dec 7, 2017
Published to the GitHub Advisory Database May 13, 2022
Reviewed May 1, 2024
Last updated May 1, 2024

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2017-17458

GHSA ID

GHSA-6v56-cpg6-3rpx

Source code

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