Vulnerability CVE-2009-4028
Published: 2009-11-30   Modified: 2012-02-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
MySQL - 5.0.88 Multiple Vulnerabalities
Jan Lieskovsky
03.12.2009

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Mysql -> Mysql 

 References:
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/oval%3Aorg.mitre.oval%3Adef%3A10940
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8510
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