Detections
Analytics
Citrix XenApp Online Plug-in / Receiver Crafted Certificate MitM Spoofing Weakness
medium Nessus Plugin ID 42961
Synopsis
A client application installed on the remote Windows host is affected by a man-in-the-middle vulnerability.Description
The version of Citrix Online Plug-in or ICA Client installed on the remote Windows host is affected by an unspecified man-in-the-middle (MitM) vulnerability. This issue is related to Microsoft security bulletin MS09-056 and is likely due to a failure to detect null bytes in the common name of a server certificate. A remote attacker can exploit this issue to perform a man-in-the-middle attack, allowing the attacker to read or modify SSL/TLS traffic being sent to and from the host.This plugin only checks the ICA Client running on Windows, though other platforms are affected.
Solution
Upgrade to Citrix Online Plug-in or Citrix ICA Client version 11.0.150 / 11.2.0 or later.See Also
https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2009/ms09-056
Plugin Details
Severity: Medium
ID: 42961
File Name: citrix_ica_client_ssl_mitm.nasl
Version: 1.17
Type: local
Agent: windows
Family: Windows
Published: 12/1/2009
Updated: 11/15/2018
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 2.5
CVSS v2
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:citrix:online_plug-in_for_windows
Required KB Items: SMB/Registry/Enumerated, SMB/name, SMB/login, SMB/password, SMB/transport
Exploit Ease: No known exploits are available
Patch Publication Date: 11/9/2009
Vulnerability Publication Date: 11/9/2009
Reference Information
CVE: CVE-2009-3936
BID: 37073