Input validation error in Xen

1) Input validation error

EUVDB-ID: #VU32183

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-10024

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local privileged user to a crash the entire system.

Xen through 4.8.x allows local x86 PV guest OS kernel administrators to cause a denial of service (host hang or crash) by modifying the instruction stream asynchronously while performing certain kernel operations.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Xen: 4.24

External links

http://www.debian.org/security/2017/dsa-3847
http://www.securityfocus.com/bid/95021
http://www.securitytracker.com/id/1037517
http://xenbits.xen.org/xsa/advisory-202.html
http://security.gentoo.org/glsa/201612-56
http://support.citrix.com/article/CTX219378

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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