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Vulnerability Details : CVE-2012-2119

Buffer overflow in the macvtap device driver in the Linux kernel before 3.4.5, when running in certain configurations, allows privileged KVM guest users to cause a denial of service (crash) via a long descriptor with a long vector length.
Publish Date : 2013-01-22 Last Update Date : 2013-06-20
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- CVSS Scores & Vulnerability Types

CVSS Score
5.2
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Single system (The vulnerability requires an attacker to be logged into the system (such as at a command line or via a desktop session or web interface).)
Gained Access None
Vulnerability Type(s) Denial Of ServiceOverflow
CWE ID 119

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
5.2
AV:A/AC:M/Au:S/C:N/I:N/A:C 2012-04-16 2012-04-16
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- Related OVAL Definitions

Title Definition Id Class Family
ELSA-2012:0743: kernel security and bug fix update (Important) oval:org.mitre.oval:def:23889 unix
RHSA-2012:0743: kernel security and bug fix update (Important) oval:org.mitre.oval:def:21473 unix
RHSA-2012:0743: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20120743 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-2012-2119

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 3.4 Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.4.1 Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.4.2 Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.4.3 Version Details Vulnerabilities
5 OS Linux Linux Kernel 3.4.4 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 5

- References For CVE-2012-2119

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b92946e2919134ebe2a4083e4302236295ea2a73 CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
SUSE openSUSE-SU-2013:0925
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278 CONFIRM
http://rhn.redhat.com/errata/RHSA-2012-0743.html
REDHAT RHSA-2012:0743
http://marc.info/?l=linux-netdev&m=133455718001608&w=2
MLIST [linux-netdev] 20120416 [PATCH 3/6] macvtap: zerocopy: validate vector length before pinning user pages
https://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73 CONFIRM
http://www.openwall.com/lists/oss-security/2012/04/19/14
MLIST [oss-security] 20120419 Re: CVE request -- kernel: macvtap: zerocopy: vector length is not validated before pinning user pages
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 CONFIRM
http://ubuntu.com/usn/usn-1529-1
UBUNTU USN-1529-1
https://oss.oracle.com/git/?p=redpatch.git;a=commit;h=4aae94d1c7b32316911c86176c0ed4f8ed62da73 CONFIRM

- Metasploit Modules Related To CVE-2012-2119

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


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