CVE-2009-4028
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.
Key facts
- CVSS score
- 6.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 1.8% (78th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-3999)
- Published
- November 30, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-3999 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- mysql / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
and 54 more…
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(Exploit)
- 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(Vendor Advisory)
- 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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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