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Last updated: 10/23/2014 2:16:17 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-1390

Original release date: 06/16/2009
Last revised: 06/19/2009
Source: US-CERT/NIST

Overview

Mutt 1.5.19, when linked against (1) OpenSSL (mutt_ssl.c) or (2) GnuTLS (mutt_ssl_gnutls.c), allows connections when only one TLS certificate in the chain is accepted instead of verifying the entire chain, which allows remote attackers to spoof trusted servers via a man-in-the-middle attack.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 (MEDIUM) (AV:N/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (06/17/2009)
Not vulnerable. This issue did not affect the versions of mutt as shipped with Red Hat Enterprise Linux 3, 4, or 5. Only mutt version 1.5.19 was affected by this flaw.

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: http://dev.mutt.org/hg/mutt/rev/64bf199c8d8a
Type: Patch Information; Exploit
External Source: MLIST
Name: [oss-security] 20090610 Mutt 1.5.19 SSL chain verification flaw
Type: Patch Information
External Source: CONFIRM
Name: http://dev.mutt.org/hg/mutt/rev/8f11dd00c770
External Source: XF
Name: mutt-x509-security-bypass(51068)
Type: Patch Information
External Source: BID
Name: 35288
Type: Patch Information
External Source: FEDORA
Name: FEDORA-2009-6465

Technical Details

Vulnerability Type (View All)