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Test ID:1.3.6.1.4.1.25623.1.0.69782
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0843
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2011:0843.

Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH (SASL),
and TLS.

A heap-based buffer over-read flaw was found in the way Postfix performed
SASL handlers management for SMTP sessions, when Cyrus SASL authentication
was enabled. A remote attacker could use this flaw to cause the Postfix
smtpd server to crash via a specially-crafted SASL authentication request.
The smtpd process was automatically restarted by the postfix master process
after the time configured with service_throttle_time elapsed.
(CVE-2011-1720)

Note: Cyrus SASL authentication for Postfix is not enabled by default.

Red Hat would like to thank the CERT/CC for reporting this issue. Upstream
acknowledges Thomas Jarosch of Intra2net AG as the original reporter.

Users of Postfix are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing this
update, the postfix service will be restarted automatically.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2011-0843.html

Risk factor : High

CVSS Score:
6.8

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-1720
BugTraq ID: 47778
http://www.securityfocus.com/bid/47778
Bugtraq: 20110509 Memory corruption in Postfix SMTP server Cyrus SASL support (CVE-2011-1720) (Google Search)
http://www.securityfocus.com/archive/1/517917/100/0/threaded
CERT/CC vulnerability note: VU#727230
http://www.kb.cert.org/vuls/id/727230
Debian Security Information: DSA-2233 (Google Search)
http://www.debian.org/security/2011/dsa-2233
http://security.gentoo.org/glsa/glsa-201206-33.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2011:090
http://www.mail-archive.com/postfix-announce@postfix.org/msg00007.html
http://www.osvdb.org/72259
http://www.securitytracker.com/id?1025521
http://secunia.com/advisories/44500
http://securityreason.com/securityalert/8247
SuSE Security Announcement: SUSE-SA:2011:023 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00002.html
http://www.ubuntu.com/usn/usn-1131-1
XForce ISS Database: postfix-cyrus-sasl-code-exec(67359)
https://exchange.xforce.ibmcloud.com/vulnerabilities/67359
CopyrightCopyright (c) 2011 E-Soft Inc. http://www.securityspace.com

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