Detections
Analytics
Citrix XenServer Multiple Vulnerabilities (CTX224740)
critical Nessus Plugin ID 101205
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Synopsis
A server virtualization platform installed on the remote host is affected by multiple vulnerabilities.Description
The version of Citrix XenServer installed on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities :- A flaw exists that causes grant table operations to fail due to improper handling of reference counts. An unauthenticated, remote attacker can exploit this to have an unspecified impact.
- An information disclosure vulnerability exists due to blkif responses leaking stack data. An unauthenticated, remote attacker can exploit this to disclose potentially sensitive information.
- A NULL pointer dereference flaw exists in the event channel poll that allows an unauthenticated, remote attacker to cause a denial of service condition.
- A flaw exists in shadow emulation due to insufficient reference counts. An unauthenticated, remote attacker can exploit this to have an unspecified impact.
- A race condition exists in the grant table unmap code that allows an unauthenticated, remote attacker to have an unspecified impact.
- An unspecified flaw exists in page transfers that allows a local attacker on the PV guest to gain elevated privileges.
- A flaw exists that is triggered by stale P2M mappings due to insufficient error checking. An unauthenticated, remote attacker can exploit this to have an unspecified impact.
Solution
Apply the appropriate hotfix according to the vendor advisory.See Also
Plugin Details
Severity: Critical
ID: 101205
File Name: citrix_xenserver_CTX224740.nasl
Version: 1.8
Type: local
Family: Misc.
Published: 7/3/2017
Updated: 4/24/2020
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.5
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2017-10921
CVSS v3
Risk Factor: Critical
Base Score: 10
Temporal Score: 8.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/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: 6/27/2017
Vulnerability Publication Date: 6/27/2017
Reference Information
CVE: CVE-2017-10911, CVE-2017-10912, CVE-2017-10913, CVE-2017-10914, CVE-2017-10915, CVE-2017-10917, CVE-2017-10918, CVE-2017-10920, CVE-2017-10921, CVE-2017-10922