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Vulnerability Details : CVE-2016-9793

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.
Publish Date : 2016-12-28 Last Update Date : 2018-01-04
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
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) Denial Of ServiceOverflowMemory corruption
CWE ID 119

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2017:0931: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20170931 unix
RHSA-2017:0933: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20170933 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2016-9793

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 4.8.13 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2016-9793

https://access.redhat.com/errata/RHSA-2017:0932
REDHAT RHSA-2017:0932
https://source.android.com/security/bulletin/2017-03-01.html CONFIRM
https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793
https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290 CONFIRM
https://access.redhat.com/errata/RHSA-2017:0933
REDHAT RHSA-2017:0933
http://www.securitytracker.com/id/1037968
SECTRACK 1037968
https://bugzilla.redhat.com/show_bug.cgi?id=1402013 CONFIRM
http://www.openwall.com/lists/oss-security/2016/12/03/1
MLIST [oss-security] 20161202 Re: CVE Request: Linux: signed overflows for SO_{SND|RCV}BUFFORCE
http://www.securityfocus.com/bid/94655
BID 94655 Linux Kernel 'net/core/sock.c' Multiple Local Memory Corruption Vulnerabilities Release Date:2017-05-23
https://access.redhat.com/errata/RHSA-2017:0931
REDHAT RHSA-2017:0931
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290 CONFIRM
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14 CONFIRM

- Metasploit Modules Related To CVE-2016-9793

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


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