Citrix XenServer QEMU IDE Buffer Overflow Code Execution (CTX201593)

high Nessus Plugin ID 85242
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Synopsis

The remote host is affected by a code execution vulnerability.

Description

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.

Solution

Apply the relevant hotfix referenced in the vendor advisory.

See Also

https://support.citrix.com/article/CTX201593

Plugin Details

Severity: High

ID: 85242

File Name: citrix_xenserver_CTX201593.nasl

Version: 1.10

Type: local

Family: Misc.

Published: 8/5/2015

Updated: 11/22/2019

Dependencies: citrix_xenserver_version.nbin

Risk Information

CVSS Score Source: CVE-2015-5154

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

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

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:citrix:xenserver

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/20/2015

Vulnerability Publication Date: 7/27/2015

Reference Information

CVE: CVE-2015-5154

BID: 76048