CVE-2009-2730

GnuTLS < 2.8.2 - Certificate Validation Bypass via Null Byte in Domain Name

Title source: llm
STIX 2.1

Description

libgnutls in GnuTLS before 2.8.2 does not properly handle a '\0' character in a domain name in the subject's (1) Common Name (CN) or (2) Subject Alternative Name (SAN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

References (13)

Core 13
Core References
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8409
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1022777
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2009/08/14/6
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-1232.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36496
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10778
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36266
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/507985/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/52404
Vendor Advisory vendor-advisory x_refsource_redhat
https://rhn.redhat.com/errata/RHSA-2010-0095.html

Scores

EPSS 0.0270
EPSS Percentile 86.1%

Details

CWE
CWE-310
Status published
Products (50)
gnu/gnutls 1.0.16
gnu/gnutls 1.0.17
gnu/gnutls 1.0.18
gnu/gnutls 1.0.19
gnu/gnutls 1.0.20
gnu/gnutls 1.0.21
gnu/gnutls 1.0.22
gnu/gnutls 1.0.23
gnu/gnutls 1.0.24
gnu/gnutls 1.0.25
... and 40 more
Published Aug 12, 2009
Tracked Since Feb 18, 2026