CVE-2008-2936
CVE-2008-2936 is a medium-severity vulnerability in Postfix with a CVSS 2.0 base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.
Key facts
- Severity: Medium (CVSS 2.0 base score 6.2)
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-264
- Affected product: Postfix
- Published:
- Last modified:
Description
Postfix before 2.3.15, 2.4 before 2.4.8, 2.5 before 2.5.4, and 2.6 before 2.6-20080814, when the operating system supports hard links to symlinks, allows local users to append e-mail messages to a file to which a root-owned symlink points, by creating a hard link to this symlink and then sending a message. NOTE: this can be leveraged to gain privileges if there is a symlink to an init script.
Frequently asked questions
- What is CVE-2008-2936?
- Postfix before 2.3.15, 2.4 before 2.4.8, 2.5 before 2.5.4, and 2.6 before 2.6-20080814, when the operating system supports hard links to symlinks, allows local users to append e-mail messages to a file to which a root-owned symlink points, by creating a hard link to this symlink and then sending a message. NOTE: this can be leveraged to gain privileges if there is a symlink to an init script.
- How severe is CVE-2008-2936?
- CVE-2008-2936 has a CVSS 2.0 base score of 6.2, rated medium severity.
- Is CVE-2008-2936 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2008-2936?
- CVE-2008-2936 primarily affects Postfix. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2008-2936?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2008-2936 published?
- CVE-2008-2936 was published on 2008-08-18 and last updated on 2026-06-16.
References
- ftp://ftp.porcupine.org/mirrors/postfix-release/experimental/postfix-2.6-20080814.HISTORY
- ftp://ftp.porcupine.org/mirrors/postfix-release/official/postfix-2.3.15.HISTORY
- ftp://ftp.porcupine.org/mirrors/postfix-release/official/postfix-2.4.8.HISTORY
- ftp://ftp.porcupine.org/mirrors/postfix-release/official/postfix-2.5.4.HISTORY
- http://article.gmane.org/gmane.mail.postfix.announce/110
- http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00002.html
- http://secunia.com/advisories/31469
- http://secunia.com/advisories/31474
- http://secunia.com/advisories/31477
- http://secunia.com/advisories/31485
- http://secunia.com/advisories/31500
- http://secunia.com/advisories/31530
- http://secunia.com/advisories/32231
- http://security.gentoo.org/glsa/glsa-200808-12.xml
- http://securityreason.com/securityalert/4160
- http://wiki.rpath.com/Advisories:rPSA-2008-0259
- http://www.debian.org/security/2008/dsa-1629
- http://www.kb.cert.org/vuls/id/938323
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:171
- http://www.redhat.com/support/errata/RHSA-2008-0839.html
- http://www.securityfocus.com/archive/1/495474/100/0/threaded
- http://www.securityfocus.com/archive/1/495632/100/0/threaded
- http://www.securityfocus.com/archive/1/495882/100/0/threaded
- http://www.securityfocus.com/bid/30691
- http://www.securitytracker.com/id?1020700
- http://www.vupen.com/english/advisories/2008/2385
- https://exchange.xforce.ibmcloud.com/vulnerabilities/44460
- https://issues.rpath.com/browse/RPL-2689
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10033
- https://usn.ubuntu.com/636-1/
Affected products (28)
- cpe:2.3:a:postfix:postfix:2.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.6:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.7:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.8:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.9:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.10:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.11:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.12:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.13:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.3.14:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.4:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.5:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.6:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.4.7:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:postfix:postfix:2.6.0:*:*:*:*:*:*:*
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