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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…
Medium6.8EPSS 21.5%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 21.5% · top 2.4% of all CVEs (3 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (18)
- 20110509 Memory corruption in Postfix SMTP server Cyrus SASL support (CVE-2011-1720) (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://www.postfix.org/CVE-2011-1720.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 44500 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 47778 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- GLSA-201206-33 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 72259 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- VU#727230 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 1025521 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- [postfix-announce] 20110509 Memory corruption in Postfix SMTP server Cyrus SASL support (CVE-2011-1720) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.postfix.org/announcements/postfix-2.8.3.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 8247 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- SUSE-SA:2011:023 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=699035 (opens in a new tab)x_refsource_CONFIRMx_transferred
- MDVSA-2011:090 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-2233 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-1131-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- postfix-cyrus-sasl-code-exec(67359) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2011-1720)Record last updated .