Mutt X.509 security bypass
| mutt-x509-security-bypass (51068) |  Medium Risk |
Description:
Mutt could allow a remote attacker to bypass security restrictions, caused by improper verification of the X.509 certificate chains. A remote attacker could exploit this vulnerability using man-in-the-middle techniques to spoof SSL certificates and redirect a user to a malicious Web site that would appear to be trusted. This could allow the attacker to obtain sensitive information that could be used to launch further attacks against the victim's system.
*CVSS:
| Base Score: | 5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 3.7 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Apply the patch for this vulnerability, available from the Mutt Mercurial Repository. See References.
References:
- Mutt Mercurial Repository: Fix TLS certificate chain validation for openssl.
- oss-security Mailing List, Wed, 10 Jun 2009 11:50:38 +0200: Mutt 1.5.19 SSL chain verification flaw.
- BID-35288: Mutt 'mutt_ssl.c' X.509 Certificate Chain Security Bypass Vulnerability
- CVE-2009-1390: 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.
- OSVDB ID: 56467: Mutt TLS Certificate Chain Validation Weakness
Platforms Affected:
- Michael R. Elkins and Jeremy Blosser Mutt 1.5.19
Reported:
Jun 10, 2009
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.