VDB-122954 · CVE-2018-14007 · XSA-271

Citrix XenServer 7.1 path traversal

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2	$0-$5k	0.00

A vulnerability was found in Citrix XenServer 7.1 (Virtualization Software) and classified as critical. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a directory traversal vulnerability. Using CWE to declare the problem leads to CWE-22. Impacted is confidentiality, integrity, and availability.

The bug was discovered 08/14/2018. The weakness was shared 08/15/2018 by Ronald Volgers as XSA-271 as confirmed security advisory (Website). The advisory is available at xenbits.xen.org. This vulnerability is handled as CVE-2018-14007 since 07/12/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 111789 (Citrix XenServer Multiple Vulnerabilities (Foreshadow) (CTX236548)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context local.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 105110) and Tenable (111789).

Productinfoedit

Type

Virtualization Software

Vendor

Citrix

Name

XenServer

CPE 2.3infoedit

🔍

CPE 2.2infoedit

🔍

CVSSv3infoedit

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2infoedit

AV	AC	Au	C	I	A
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfoedit

Class: Directory traversal
CWE: CWE-22
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 111789
Nessus Name: Citrix XenServer Multiple Vulnerabilities (Foreshadow) (CTX236548)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍

Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfoedit

07/12/2018 🔍
08/14/2018 +33 days 🔍
08/14/2018 +0 days 🔍
08/15/2018 +0 days 🔍
08/15/2018 +0 days 🔍
08/15/2018 +0 days 🔍
08/16/2018 +1 days 🔍
08/16/2018 +0 days 🔍
03/16/2020 +578 days 🔍