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    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.

    Published:Aug 14, 2008
    Last Modified:Apr 23, 2026
    EPS:Aug 18, 2008
    EPSS Score:0.00249
    CVSS Score:6.2

    Affected Products

    Vendor
    Postfix
    Product
    Postfix
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://www.exploit-db.com/exploits/6337

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    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-2011-1720 (CVSS 6.8) — 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, whe…
    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, …

    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/
    https://www.exploit-db.com/exploits/6337
    https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00271.html
    https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00287.html
    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/
    https://www.exploit-db.com/exploits/6337
    https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00271.html
    https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00287.html

    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