Some vulnerabilities have been reported in PAM-MySQL, which potentially can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.
1) An unspecified error in the SQL logging facility can potentially be exploited to cause a DoS.
2) A double-free error exists in the authentication and authentication token alteration code when handling a pointer returned by the "pam_get_item()" function. This can be exploited by supplying a specially crafted password, which results in a DoS or can potentially be exploited to execute arbitrary code.
The vulnerabilities have been reported in versions 0.6.1 and 0.7pre2. Prior versions may also be affected.
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Subject: PAM-MySQL SQL Logging and Authentication Vulnerabilities
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