Citrix XenServer QEMU IDE Buffer Overflow Code Execution (CTX201593)

Medium Nessus Plugin ID 85242


The remote host is affected by a code execution vulnerability.


The version of Citrix XenServer running on the remote host is affected by a heap buffer overflow condition in the IDE subsystem of the bundled QEMU software, which is related to I/O buffer access when handling certain ATAPI commands. An attacker, with sufficient privileges in an HVM guest VM, can exploit this issue to execute arbitrary code in the context of the hypervisor process on the host system. Note that exploitation requires the CDROM drive to be enabled on the guest system.


Apply the relevant hotfix referenced in the vendor advisory.

See Also

Plugin Details

Severity: Medium

ID: 85242

File Name: citrix_xenserver_CTX201593.nasl

Version: $Revision: 1.7 $

Type: local

Family: Misc.

Published: 2015/08/05

Modified: 2017/02/08

Dependencies: 76770

Risk Information

Risk Factor: Medium


Base Score: 6.5

Temporal Score: 4.8

Vector: CVSS2#AV:A/AC:H/Au:S/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Base Score: 8

Vector: CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:citrix:xenserver

Required KB Items: Host/XenServer/version, Host/local_checks_enabled

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/07/20

Vulnerability Publication Date: 2015/07/27

Reference Information

CVE: CVE-2015-5154

BID: 76048

OSVDB: 125389