Postfix Cyrus SASL Authentication Context Data Reuse Memory Corruption (exploit)

medium Nessus Plugin ID 54584
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VPR Score: 5.9


The remote mail server is affected by a memory corruption vulnerability.


The Postfix mail server listening on this port appears vulnerable to a memory corruption attack as Nessus was able to crash an SMTP session with this host by using two different authentication methods in one session.

Note that code execution as the unprivileged postfix user may also be possible.


Upgrade to Postfix 2.5.13 / 2.6.19 / 2.7.4 / 2.8.3 or later.

See Also

Plugin Details

Severity: Medium

ID: 54584

File Name: postfix_memory_corruption_exploit.nasl

Version: 1.8

Type: remote

Published: 5/19/2011

Updated: 11/15/2018

Dependencies: smtp_authentication.nasl

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS v2.0

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:postfix:postfix

Required KB Items: SMTP/postfix

Exploit Ease: No known exploits are available

Exploited by Nessus: true

Patch Publication Date: 5/9/2011

Vulnerability Publication Date: 5/9/2011

Reference Information

CVE: CVE-2011-1720

BID: 47778

CERT: 727230

Secunia: 44500