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CVE-2015-8215

5.0 · MEDIUM

net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes to the MTU value, which allows context-dependent attackers to cause a denial of service (pac…

Published Nov 16, 2015linuxCWE-20EPSS 3.69%

Overview

CVE-2015-8215 is a medium-severity vulnerability affecting linux linux_kernel. It was published on November 16, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes to the MTU value, which allows context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager product.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel0Affected

References

Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=77751427a1ff25b27d47a4c36b12c3c8667855acReflists.opensuse.org/opensuse-security-announce/2015-12/msg00005.htmlReflists.opensuse.org/opensuse-security-announce/2015-12/msg00018.htmlReflists.opensuse.org/opensuse-security-announce/2015-12/msg00026.htmlReflists.opensuse.org/opensuse-security-announce/2015-12/msg00031.htmlReflists.opensuse.org/opensuse-security-announce/2016-02/msg00013.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlRefrhn.redhat.com/errata/RHSA-2016-0855.htmlRefwww.debian.org/security/2015/dsa-3364Refwww.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-8215?

CVE-2015-8215 is a medium-severity vulnerability affecting linux linux_kernel. It was published on November 16, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2015-8215?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-8215?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-8215?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-8215 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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