Summaryinfo

A vulnerability was found in dpkg. It has been declared as problematic. The affected element is an unknown function of the component Filename Handler. The manipulation results in path traversal. This vulnerability is cataloged as CVE-2014-3227. Furthermore, there is an exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in dpkg. Affected is some unknown processing of the component Filename Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

dpkg 1.15.9, 1.16.x before 1.16.14, and 1.17.x before 1.17.9 expect the patch program to be compliant with a need for the "C-style encoded filenames" feature, but is supported in environments with noncompliant patch programs, which triggers an interaction error that allows remote attackers to conduct directory traversal attacks and modify files outside of the intended directories via a crafted source package. NOTE: this vulnerability exists because of reliance on unrealistic constraints on the behavior of an external program.

The weakness was shared 04/28/2014 by Javier Serrano Polo as #746306 as not defined bug report (Bug Tracker). The advisory is shared for download at bugs.debian.org. This vulnerability is traded as CVE-2014-3227 since 05/06/2014. The exploitability is told to be difficult. The attack needs to be approached locally. Required for exploitation is a authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

A public exploit has been developed by Javier Serrano Polo in DPKG and been published 1 days after the advisory. The exploit is shared for download at bugs.debian.org. It is declared as proof-of-concept.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at bugs.debian.org.

The entry VDB-13168 is related to this item. Once again VulDB remains the best source for vulnerability data.

Affected

• Debian GNU/Linux

Productinfo

Name

• dpkg

Version

• 1.15.9
• 1.16.0
• 1.16.0.1
• 1.16.0.2
• 1.16.0.3
• 1.16.1
• 1.16.1.1
• 1.16.1.2
• 1.16.2
• 1.16.3
• 1.16.4
• 1.16.4.1
• 1.16.4.2
• 1.16.4.3
• 1.16.5
• 1.16.6
• 1.16.7
• 1.16.8
• 1.16.9
• 1.16.10
• 1.16.11
• 1.16.12
• 1.17.0
• 1.17.1
• 1.17.2
• 1.17.3
• 1.17.4
• 1.17.5
• 1.17.6
• 1.17.7
• 1.17.8

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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