VYPR
Unrated severityNVD Advisory· Published Nov 30, 2009· Updated Jun 16, 2026

CVE-2009-4028

CVE-2009-4028

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.

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Affected products

124

Patches

Vulnerability mechanics

References

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