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Vulnerability Details : CVE-2014-1896

The (1) do_send and (2) do_recv functions in io.c in libvchan in Xen 4.2.x, 4.3.x, and 4.4-RC series allows local guests to cause a denial of service or possibly gain privileges via crafted xenstore ring indexes, which triggers a "read or write past the end of the ring."
Publish Date : 2014-04-01 Last Update Date : 2014-04-19
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
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 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 ServiceGain privileges
CWE ID 20

- Related OVAL Definitions

Title Definition Id Class Family
SUSE-SU-2014:0373-1 -- Security update for Xen oval:org.mitre.oval:def:25390 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-2014-1896

# Product Type Vendor Product Version Update Edition Language
1 OS XEN XEN 4.2.0 Version Details Vulnerabilities
2 OS XEN XEN 4.2.1 Version Details Vulnerabilities
3 OS XEN XEN 4.2.2 Version Details Vulnerabilities
4 OS XEN XEN 4.2.3 Version Details Vulnerabilities
5 OS XEN XEN 4.3.0 Version Details Vulnerabilities
6 OS XEN XEN 4.3.1 Version Details Vulnerabilities
7 OS XEN XEN 4.4.0 RC1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
XEN XEN 7

- References For CVE-2014-1896

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
SUSE SUSE-SU-2014:0373
http://www.openwall.com/lists/oss-security/2014/02/07/12
MLIST [oss-security] 20140207 Re: Xen Security Advisory 84 - integer overflow in several XSM/Flask hypercalls
http://www.openwall.com/lists/oss-security/2014/02/10/7
MLIST [oss-security] 20140210 Xen Security Advisory 86 (CVE-2014-1896) - libvchan failure handling malicious ring indexes
http://xenbits.xen.org/xsa/xsa86.patch CONFIRM
http://xenbits.xen.org/xsa/advisory-86.html CONFIRM

- Metasploit Modules Related To CVE-2014-1896

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


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