SMTP Server Denial of Service and Remote Code Execution Vulnerability

CVE-2011-1720 · MEDIUM Severity

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

The SMTP server in Postfix before 2.5.13, 2.6.x before 2.6.10, 2.7.x before 2.7.4, and 2.8.x before 2.8.3, when certain Cyrus SASL authentication methods are enabled, does not create a new server handle after client authentication fails, which allows remote attackers to cause a denial of service (heap memory corruption and daemon crash) or possibly execute arbitrary code via an invalid AUTH command with one method followed by an AUTH command with a different method.

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