CVE-2009-4028

2009-11-3000:00:00

ubuntu.com

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

0.005

Percentile

76.8%

JSON

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.

Bugs

Notes

Author	Note
mdeslaur	dapper doesn’t build with ssl hardy+ builds with yaSSL none of our releases are vulnerable, as the yaSSL code ignores the verify callback (see mysql bug)