Buffer overflow in Postfix
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.
Vulnerability class: Buffer Overflow
EPSS: 0.216 (97.4th percentile) — read the EPSS interpretation.
Affected products
- Postfix — versions 2.0.0, 2.0.1, 2.0.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (mailing-list, x_refsource_BUGTRAQ)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- cve@mitre.org (x_refsource_SECUNIA, Vendor Advisory, third-party-advisory)
- cve@mitre.org (Patch, vdb-entry, x_refsource_BID)
- cve@mitre.org (vendor-advisory, x_refsource_GENTOO)
- cve@mitre.org (x_refsource_OSVDB, vdb-entry)
- cve@mitre.org (US Government Resource, x_refsource_CERT-VN, third-party-advisory)
- cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2011-1720?
- CVE-2011-1720 is a vulnerability in Postfix, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2011-05-13.
- Is CVE-2011-1720 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.