Input validation error in Xen



Published: 2014-01-07 | Updated: 2020-08-10
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2011-1166
CWE-ID CWE-20
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Subscribe 		Xen
Server applications / Virtualization software

Vendor Xen Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU42176

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:A/AC:L/PR:/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-1166

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote #AU# to perform a denial of service (DoS) attack.

Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Xen: 3.0.2 - 4.0.0

External links

http://downloads.avaya.com/css/P8/documents/100145416
http://rhn.redhat.com/errata/RHSA-2011-0833.html
http://wiki.xen.org/wiki/Security_Announcements#XSA-1_Host_crash_due_to_failure_to_correctly_validate_PV_kernel_execution_state.


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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