PT-2011-3320 · Postfix+2 · Postfix+2

Thomas Jarosch · Published 2011-05-13 · Updated 2018-10-09 · CVE-2011-1720

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Postfix versions prior to 2.5.13 Postfix versions 2.6.x prior to 2.6.10 Postfix versions 2.7.x prior to 2.7.4 Postfix versions 2.8.x prior to 2.8.3

Description The issue is related to the SMTP server in Postfix when certain Cyrus SASL authentication methods are enabled. It does not create a new server handle after client authentication fails, which allows remote attackers to cause a denial of service or possibly execute arbitrary code via an invalid AUTH command with one method followed by an AUTH command with a different method.

Recommendations For Postfix versions prior to 2.5.13, update to version 2.5.13 or later. For Postfix versions 2.6.x prior to 2.6.10, update to version 2.6.10 or later. For Postfix versions 2.7.x prior to 2.7.4, update to version 2.7.4 or later. For Postfix versions 2.8.x prior to 2.8.3, update to version 2.8.3 or later.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2011-1720

DSA-2233-1

RHSA-2011:0843

RHSA-2011_0843

Affected Products

Cyrus-Sasl

Postfix

Red Hat

References · 25

• http://security.gentoo.org/glsa/glsa-201206-33.xml · Vendor Advisory
• http://postfix.org/announcements/postfix-2.8.3.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2011-1720 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00002.html · Vendor Advisory
• http://ubuntu.com/usn/usn-1131-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2011-1720 · Vendor Advisory
• http://debian.org/security/2011/dsa-2233 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2011-1720 · Vendor Advisory
• http://secunia.com/advisories/44500 · Vendor Advisory
• http://securityfocus.com/bid/47778 · Patch
• http://postfix.org/CVE-2011-1720.html · Vendor Advisory
• http://mandriva.com/security/advisories?name=MDVSA-2011:090 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2011-0843.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-1720 · Security Note
• http://osvdb.org/72259 · Note