CVE-2016-8860

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Summary

CVECVE-2016-8860
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-01-04 20:59:00 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionTor 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.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.026820000 probability, percentile 0.859500000 (date 2026-05-11)

Problem Types: CWE-119 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Torproject Tor 0.2.9.0 alpha All All
Application Torproject Tor 0.2.9.1 alpha All All
Application Torproject Tor 0.2.9.2 alpha All All
Application Torproject Tor 0.2.9.3 alpha All All
Application Torproject Tor All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-3694-1 tor af854a3a-2127-422b-91ae-364da2661108 www.debian.org
oss-security - Re: CVE request for tor af854a3a-2127-422b-91ae-364da2661108 openwall.com Third Party Advisory
Add a one-word sentinel value of 0x0 at the end of each buf_t chunk · torproject/tor@3cea86e · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Vendor Advisory
#20384 (TROVE-2016-10-001: out-of-bounds read on buffer chunks) – Tor Bug Tracker & Wiki af854a3a-2127-422b-91ae-364da2661108 trac.torproject.org Vendor Advisory
Tor: Multiple vulnerabilities (GLSA 201612-45) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
Tor 0.2.8.9 is released, with important fixes | The Tor Blog af854a3a-2127-422b-91ae-364da2661108 blog.torproject.org Release Notes, Vendor Advisory
Tor CVE-2016-8860 Remote Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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