Mercurial patch.py directory traversal

mercurial-patch-directory-traversal (43551)

Medium Risk

Description:

Mercurial could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted request to the patch.py script containing "dot dot" sequences (..) using a patch file to modify arbitrary files on the system.

*CVSS:

Base Score:	6.4
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	None
Temporal Score:	4.7
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Obtain Information

Remedy:

Apply the patch for this vulnerability (87c704ac92d4), available from the Mercurial Web site. See References.

References:

• Mercurial Web site: Mercurial .
• Mercurial Web site: changeset 6758:87c704ac92d4.
• oss-security Mailing List, Mon, 30 Jun 2008 09:47:19 +0200: CVE id request mercurial:Insufficient input validation.
• BID-30072: Mercurial 'patch.py' Directory Traversal Vulnerability
• CVE-2008-2942: Directory traversal vulnerability in patch.py in Mercurial 1.0.1 allows user-assisted attackers to modify arbitrary files via .. (dot dot) sequences in a patch file.
• GLSA-200807-09: Mercurial: Directory traversal
• SA31108: Mercurial "applydiff()" Directory Traversal Security Issue
• SUSE-SR:2008:015: SUSE Security Summary Report

Platforms Affected:

• Gentoo Linux
• Mercurial Mercurial 1.0.1

Reported:

Jun 30, 2008

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