CVE-2016-1887

Public Exploit

Description

Integer signedness error in the sockargs function in sys/kern/uipc_syscalls.c in FreeBSD 10.1 before p34, 10.2 before p17, and 10.3 before p3 allows local users to cause a denial of service (memory overwrite and kernel panic) or gain privileges via a negative buflen argument, which triggers a heap-based buffer overflow.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.26% Top 25%
Vendor Advisory FreeBSD.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://cturt.github.io/sendmsg.html exploit
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:19.sendmsg.asc vendor advisory
http://www.securitytracker.com/id/1035906 vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-1887?
CVE-2016-1887 has been scored as a high severity vulnerability.
How to fix CVE-2016-1887?
To fix CVE-2016-1887, 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-2016-1887 being actively exploited in the wild?
It is possible that CVE-2016-1887 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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