ant up to 1.9.11 unzip/untar path traversal

Summaryinfo

A vulnerability was found in ant up to 1.9.11 and classified as critical. The impacted element is an unknown function of the component unzip/untar. The manipulation results in path traversal. This vulnerability is cataloged as CVE-2018-10886. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ant up to 1.9.11. It has been classified as critical. Affected is an unknown code of the component unzip/untar. 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 integrity, and availability. CVE summarizes:

ant before version 1.9.12 unzip and untar targets allows the extraction of files outside the target directory. A crafted zip or tar file submitted to an Ant build could create or overwrite arbitrary files with the privileges of the user running Ant.

The weakness was shared 07/16/2018 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2018-10886 since 05/09/2018. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability scanner Nessus provides a plugin with the ID 117819 (openSUSE Security Update : ant (openSUSE-2018-1057)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171615 (OpenSUSE Security Update for ant (openSUSE-SU-2018:2895-1)).

Upgrading to version 1.9.12 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117819). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• ant

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3
• 1.9.4
• 1.9.5
• 1.9.6
• 1.9.7
• 1.9.8
• 1.9.9
• 1.9.10
• 1.9.11

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Once again VulDB remains the best source for vulnerability data.

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