National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-8860 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://openwall.com/lists/oss-security/2016/10/19/11 Third 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-fixes Release Notes Vendor Advisory
https://github.com/torproject/tor/commit/3cea86eb2fbb65949673eb4ba8ebb695c87a57ce Patch Vendor Advisory
https://security.gentoo.org/glsa/201612-45
https://trac.torproject.org/projects/tor/ticket/20384 Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
0.2.8.8
 cpe:2.3:a:torproject:tor:0.2.9.0:alpha:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:torproject:tor:0.2.9.1:alpha:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:torproject:tor:0.2.9.2:alpha:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:torproject:tor:0.2.9.3:alpha:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-8860
NVD Published Date:
01/04/2017
NVD Last Modified:
06/30/2017