Denial of service in Xen

1) Race condition

EUVDB-ID: #VU8923

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-15597

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows an adjacent administrative attacker to cause DoS condition on the target system.

The weakness exists due to a race condition in certain grant copy operations. A local attacker can trigger a memory corruption error in the hypervisor and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

: 4.5.0 - 4.9.0

External links

http://xenbits.xen.org/xsa/advisory-236.html

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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