CVE-2009-4028 Information

Description

The vio_verify_callback function in viosslfactories.c in MySQL 5.0.x before 5.0.88 and 5.1.x before 5.1.41 when OpenSSL is used accepts a value of zero for the depth of X.509 certificates which allows man-in-the-middle attackers to spoof arbitrary SSL-based MySQL servers via a crafted certificate as demonstrated by a certificate presented by a server linked against the yaSSL library.

Reference

http://bugs.mysql.com/47320 http://dev.mysql.com/doc/refman/5.0/en/news-5-0-88.html http://dev.mysql.com/doc/refman/5.1/en/news-5-1-41.html http://lists.mysql.com/commits/87446 http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html http://marc.info/?l=oss-security&m=125881733826437&w=2 http://www.openwall.com/lists/oss-security/2009/11/19/3 http://www.openwall.com/lists/oss-security/2009/11/23/16 http://www.redhat.com/support/errata/RHSA-2010-0109.html http://www.vupen.com/english/advisories/2010/1107 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A10940 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A8510