National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-1390)

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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:Provides user account access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; 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: XF

Name: mutt-x509-security-bypass(51068)

Type: Patch Information

Hyperlink:http://xforce.iss.net/xforce/xfdb/51068

External Source: BID

Name: 35288

Type: Patch Information

Hyperlink:http://www.securityfocus.com/bid/35288

External Source: MLIST

Name: [oss-security] 20090610 Mutt 1.5.19 SSL chain verification flaw

Type: Patch Information

Hyperlink:http://www.openwall.com/lists/oss-security/2009/06/10/2