6.8 Medium
CVSS2
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
0.887 High
EPSS
Percentile
98.7%
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.