CVE-2015-2923

Description

The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD through 10.1 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.17% Top 15%
Vendor Advisory freebsd.org Vendor Advisory freebsd.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://openwall.com/lists/oss-security/2015/04/04/2 third party advisory mailing list
https://lists.freebsd.org/pipermail/freebsd-net/2015-April/041934.html mailing list vendor advisory
https://www.freebsd.org/security/advisories/FreeBSD-SA-15:09.ipv6.asc mitigation vendor advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6fd99094de2b83d1d4c8457f2c83483b2828e75a third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2015-2923?
CVE-2015-2923 has been scored as a medium severity vulnerability.
How to fix CVE-2015-2923?
To fix CVE-2015-2923, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-2923 being actively exploited in the wild?
It is possible that CVE-2015-2923 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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