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Last updated: 4/25/2014

CVE Publication rate: 20.8

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-0591

Original release date: 03/27/2009
Last revised: 01/19/2011
Source: US-CERT/NIST

Overview

The CMS_verify function in OpenSSL 0.9.8h through 0.9.8j, when CMS is enabled, does not properly handle errors associated with malformed signed attributes, which allows remote attackers to repudiate a signature that originally appeared to be valid but was actually invalid.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 2.6 (LOW) (AV:N/AC:H/AU:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
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

Vendor Statements (disclaimer)

Official Statement from Red Hat (03/30/2009)
Not vulnerable. This issue affected OpenSSL CMS functionality which is not present in the openssl packages as shipped with Red Hat Enterprise Linux 2.1, 3, 4 or 5.

References to Advisories, Solutions, and Tools

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External Source: VUPEN
Name: ADV-2009-0850
Type: Advisory
External Source: VUPEN
Name: ADV-2009-1175
External Source: SECUNIA
Name: 35729
External Source: CONFIRM
Name: http://www.openssl.org/news/secadv_20090325.txt
Type: Advisory
External Source: SECUNIA
Name: 34666
External Source: VUPEN
Name: ADV-2009-1548
External Source: BID
Name: 34256
External Source: XF
Name: openssl-cmsverify-security-bypass(49432)
External Source: SECUNIA
Name: 35065
External Source: VUPEN
Name: ADV-2009-1020
External Source: CONFIRM
Name: http://www.php.net/archive/2009.php#id2009-04-08-1
External Source: SECUNIA
Name: 42724
External Source: APPLE
Name: APPLE-SA-2009-09-10-2
External Source: NETBSD
Name: NetBSD-SA2009-008
External Source: CONFIRM
Name: https://kb.bluecoat.com/index?page=content&id=SA50
External Source: SECUNIA
Name: 35380
External Source: SECTRACK
Name: 1021907
External Source: SECUNIA
Name: 34460
Type: Advisory
External Source: CONFIRM
Name: http://support.apple.com/kb/HT3865
External Source: OSVDB
Name: 52865
External Source: HP
Name: SSRT090059
External Source: HP
Name: HPSBUX02435
External Source: SECUNIA
Name: 42733
External Source: CONFIRM
Name: http://voodoo-circle.sourceforge.net/sa/sa-20090326-01.html
Type: Advisory
External Source: SECUNIA
Name: 34411
Type: Advisory
External Source: CONFIRM
Name: http://sourceforge.net/project/shownotes.php?release_id=671059&group_id=116847
External Source: SUSE
Name: SUSE-SR:2009:010
External Source: SECUNIA
Name: 36701

Technical Details

Vulnerability Type (View All)