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."
Vulnerability category: Input validationDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2014-1896
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 25 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2014-1896
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.9
|
MEDIUM | AV:A/AC:M/Au:S/C:P/I:P/A:P |
4.4
|
6.4
|
NIST |
CWE ids for CVE-2014-1896
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2014-1896
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http://xenbits.xen.org/xsa/xsa86.patch
Patch
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http://xenbits.xen.org/xsa/advisory-86.html
XSA-86 - Xen Security AdvisoriesPatch;Vendor Advisory
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http://www.openwall.com/lists/oss-security/2014/02/07/12
oss-security - Re: Xen Security Advisory 84 - integer overflow in several XSM/Flask hypercalls
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http://security.gentoo.org/glsa/glsa-201407-03.xml
Xen: Multiple Vunlerabilities (GLSA 201407-03) — Gentoo security
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http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
[security-announce] SUSE-SU-2014:0373-1: important: Security update for
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http://www.openwall.com/lists/oss-security/2014/02/10/7
oss-security - Xen Security Advisory 86 (CVE-2014-1896) - libvchan failure handling malicious ring indexes
Products affected by CVE-2014-1896
- cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:*