CVE-2016-8860

Name: CVE-2016-8860
Creator: NVD / NIST
Published: 2017-01-04T20:59:00.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.93%

Last modified Jun 17, 2026

CVE-2016-8860 is a vulnerability of currently unknown severity. Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.

Metrics

EPSS Probability

1.93%

77.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Torproject	Tor	<= 0.2.8.8	—
Torproject	Tor	0.2.9.0	Alpha
Torproject	Tor	0.2.9.1	Alpha
Torproject	Tor	0.2.9.2	Alpha
Torproject	Tor	0.2.9.3	Alpha

References

http://openwall.com/lists/oss-security/2016/10/19/11Third Party Advisory
http://www.debian.org/security/2016/dsa-3694
http://www.securityfocus.com/bid/95116
https://blog.torproject.org/blog/tor-0289-released-important-fixesRelease Notes, Vendor Advisory
https://github.com/torproject/tor/commit/3cea86eb2fbb65949673eb4ba8ebb695c87a57cePatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-45
https://trac.torproject.org/projects/tor/ticket/20384Vendor Advisory
http://openwall.com/lists/oss-security/2016/10/19/11Third Party Advisory
http://www.debian.org/security/2016/dsa-3694
http://www.securityfocus.com/bid/95116
https://blog.torproject.org/blog/tor-0289-released-important-fixesRelease Notes, Vendor Advisory
https://github.com/torproject/tor/commit/3cea86eb2fbb65949673eb4ba8ebb695c87a57cePatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-45
https://trac.torproject.org/projects/tor/ticket/20384Vendor Advisory

Timeline

Published: Jan 4, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-8860?

How severe is CVE-2016-8860?

Severity scoring for CVE-2016-8860 is pending analysis. The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2016-8860?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-8860?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST