CVE-2011-1720
MEDIUMEPSS 97th pctlDescription
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.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 97% of all known CVEs.
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%40postfix.org/msg00007.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:090
- http://www.osvdb.org/72259
- http://www.postfix.org/CVE-2011-1720.html
- http://www.postfix.org/announcements/postfix-2.8.3.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
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.