CVE-2015-6496

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-08-24 · updated 2026-06-17
Weakness: CWE-17

Description

conntrackd in conntrack-tools 1.4.2 and earlier does not ensure that the optional kernel modules are loaded before using them, which allows remote attackers to cause a denial of service (crash) via a (1) DCCP, (2) SCTP, or (3) ICMPv6 packet.

Affected products

Debian Linux: 7.0, 8.0
Netfilter Conntrack-Tools: through 1.4.2

References

http://bugzilla.netfilter.org/show_bug.cgi?id=910
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174875.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174883.html
http://lists.opensuse.org/opensuse-updates/2015-10/msg00015.html
http://www.debian.org/security/2015/dsa-3341
http://www.openwall.com/lists/oss-security/2015/08/14/4
http://www.openwall.com/lists/oss-security/2015/08/18/1
https://git.netfilter.org/conntrack-tools/commit/?id=c392c159605956c7bd4a264ab4490e2b2704c0cd
http://bugzilla.netfilter.org/show_bug.cgi?id=910
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174875.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174883.html
http://lists.opensuse.org/opensuse-updates/2015-10/msg00015.html

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