Buffer overflow in Postfix - CVE-2011-1720
Published: May 13, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45044
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1720
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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.
Affected software
Postfix
Gentoo Linux
Gentoo Linux
How to mitigate CVE-2011-1720
Install update from vendor's website.
External References
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00002.html
- http://secunia.com/advisories/44500
- http://security.gentoo.org/glsa/glsa-201206-33.xml
- http://securityreason.com/securityalert/8247
- http://www.debian.org/security/2011/dsa-2233
- http://www.kb.cert.org/vuls/id/727230
- http://www.mail-archive.com/postfix-announce@postfix.org/msg00007.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:090
- http://www.osvdb.org/72259
- http://www.postfix.org/announcements/postfix-2.8.3.html
- http://www.postfix.org/CVE-2011-1720.html
- http://www.securityfocus.com/archive/1/517917/100/0/threaded
- http://www.securityfocus.com/bid/47778
- http://www.securitytracker.com/id?1025521
- http://www.ubuntu.com/usn/usn-1131-1
- https://bugzilla.redhat.com/show_bug.cgi?id=699035
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67359