dpkg 1.15.9 on Debian squeeze introduces support for the "C-style encoded filenames" feature without recognizing that the squeeze patch program lacks this feature, 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 can be considered a release engineering problem in the effort to fix CVE-2014-0471.
CVSS Severity (version 2.0):
Impact Subscore: 9.2
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification; Allows disruption of service
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[oss-security] 20140429 CVE request: directory traversal in DSA-2915-1-patched dpkg in Debian squeeze
[oss-security] 20140501 Re: CVE request: directory traversal in DSA-2915-1-patched dpkg in Debian squeeze