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Last updated: 9/20/2014 12:00:36 PM

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Vulnerability Summary for CVE-2012-4464

Original release date: 04/25/2013
Last revised: 08/26/2013
Source: US-CERT/NIST

Overview

Ruby 1.9.3 before patchlevel 286 and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the (1) exc_to_s or (2) name_err_to_s API function, which marks the string as tainted, a different vulnerability than CVE-2012-4466. NOTE: this issue might exist because of a CVE-2011-1005 regression.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification

References to Advisories, Solutions, and Tools

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External Source: FEDORA
Name: FEDORA-2012-15376
External Source: FEDORA
Name: FEDORA-2012-15395
External Source: CONFIRM
Name: http://www.ruby-lang.org/en/news/2012/10/12/cve-2012-4464-cve-2012-4466/
Type: Advisory
External Source: MLIST
Name: [oss-security] 20121003 Re: CVE Request: Ruby safe level bypasses
External Source: MISC
Name: http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=37068
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=862598
External Source: MLIST
Name: [oss-security] 20121002 CVE Request: Ruby safe level bypasses

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)