CVE Feed

    Dashboard / CVE / CVE-2011-1720

    CVE-2011-1720

    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.

    Published:May 9, 2011
    Last Modified:Apr 11, 2025
    EPS:May 13, 2011
    EPSS Score:0.67165
    CVSS Score:6.8

    Affected Products

    Vendor
    Postfix
    Product
    Postfix
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-43964 (CVSS 3.7) — Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and proce…
    CVE-2023-51764 (CVSS 5.3) — Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipel…
    CVE-2020-12063 (CVSS 5.3) — A certain Postfix 2.10.1-7 package could allow an attacker to send an email from an arbitrary-looking sender v…
    CVE-2017-10140 (CVSS 7.8) — Postfix before 2.11.10, 3.0.x before 3.0.10, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 might allow local user…
    CVE-2012-0811 (CVSS 6.5) — Multiple SQL injection vulnerabilities in Postfix Admin (aka postfixadmin) before 2.3.5 allow remote authentic…
    CVE-2011-0411 (CVSS 6.8) — The STARTTLS implementation in Postfix 2.4.x before 2.4.16, 2.5.x before 2.5.12, 2.6.x before 2.6.9, and 2.7.x…
    CVE-2009-2939 (CVSS 6.9) — The postfix.postinst script in the Debian GNU/Linux and Ubuntu postfix 2.5.5 package grants the postfix user w…
    CVE-2008-4977 (CVSS 6.9) — postfix_groups.pl in Postfix 2.5.2 allows local users to overwrite arbitrary files via a symlink attack on the…
    CVE-2008-3889 (CVSS 2.1) — Postfix 2.4 before 2.4.9, 2.5 before 2.5.5, and 2.6 before 2.6-20080902, when used with the Linux 2.6 kernel, …
    CVE-2008-2937 (CVSS 1.9) — Postfix 2.5 before 2.5.4 and 2.6 before 2.6-20080814 delivers to a mailbox file even when this file is not own…

    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High