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Vulnerability Details : CVE-2016-6559

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.
Publish Date : 2018-07-13 Last Update Date : 2019-10-09
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- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 119

- Products Affected By CVE-2016-6559

# Product Type Vendor Product Version Update Edition Language
1 OS Freebsd Freebsd 9.3 * * * Version Details Vulnerabilities
2 OS Freebsd Freebsd 10.1 * * * Version Details Vulnerabilities
3 OS Freebsd Freebsd 10.2 * * * Version Details Vulnerabilities
4 OS Freebsd Freebsd 10.3 * * * Version Details Vulnerabilities
5 OS Freebsd Freebsd 11.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Freebsd Freebsd 5

- References For CVE-2016-6559

http://www.securitytracker.com/id/1037398
SECTRACK 1037398
https://www.securityfocus.com/bid/94694
BID 94694
https://www.freebsd.org/security/advisories/FreeBSD-SA-16:37.libc.asc
FREEBSD FreeBSD-SA-16:37
https://www.kb.cert.org/vuls/id/548487
CERT-VN VU#548487

- Metasploit Modules Related To CVE-2016-6559

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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