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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2016-6559 Detail

Description

Improper bounds checking of the obuf variable in the link_ntoa() function in linkaddr.c of the BSD libc library may allow an attacker to read or write from memory. The full impact and severity depends on the method of exploit and how the library is used by applications. According to analysis by FreeBSD developers, it is very unlikely that applications exist that utilize link_ntoa() in an exploitable manner, and the CERT/CC is not aware of any proof of concept. A blog post describes the functionality of link_ntoa() and points out that none of the base utilities use this function in an exploitable manner. For more information, please see FreeBSD Security Advisory SA-16:37.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  9.8 CRITICAL
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securitytracker.com/id/1037398 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1037398 Third Party Advisory  VDB Entry 
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:37.libc.asc Vendor Advisory 
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:37.libc.asc Vendor Advisory 
https://www.kb.cert.org/vuls/id/548487 Third Party Advisory  US Government Resource 
https://www.kb.cert.org/vuls/id/548487 Third Party Advisory  US Government Resource 
https://www.securityfocus.com/bid/94694 Third Party Advisory  VDB Entry 
https://www.securityfocus.com/bid/94694 Third Party Advisory  VDB Entry 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CERT/CC  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:10.3:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:freebsd:freebsd:11.0:*:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-6559
NVD Published Date:
07/13/2018
NVD Last Modified:
11/20/2024
Source:
CERT/CC