Vulnerability Monitor

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CVE-2015-6496

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.

Security Impact Summary

CVE-2015-6496 is a security vulnerability that . Impacting 2 products from netfilter, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-08-24T14:59:12.103

Last Modified

2026-05-06T22:30:45.220

Status

Modified

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-17

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	netfilter	conntrack-tools	≤ 1.4.2	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes

References

http://bugzilla.netfilter.org/show_bug.cgi?id=910 Exploit, Issue Tracking, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174875.html Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174883.html Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2015-10/msg00015.html Mailing List, Third Party Advisory ([email protected])
http://www.debian.org/security/2015/dsa-3341 Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/08/14/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/08/18/1 Mailing List, Third Party Advisory ([email protected])
https://git.netfilter.org/conntrack-tools/commit/?id=c392c159605956c7bd4a264ab4490e2b2704c0cd Patch, Vendor Advisory, URL Repurposed ([email protected])
http://bugzilla.netfilter.org/show_bug.cgi?id=910 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174875.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174883.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2015-10/msg00015.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3341 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/08/14/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/08/18/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.netfilter.org/conntrack-tools/commit/?id=c392c159605956c7bd4a264ab4490e2b2704c0cd Patch, Vendor Advisory, URL Repurposed (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For netfilter's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.