Citrix ADC/Gateway/SD-WAN WANOP Edition NSIP/SNIP resource consumption

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.
3.0	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Citrix ADC, Gateway and SD-WAN WANOP Edition and classified as problematic. This affects an unknown function of the component NSIP/SNIP. This manipulation causes resource consumption. The identification of this vulnerability is CVE-2021-22956. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Citrix ADC, Gateway and SD-WAN WANOP Edition (Network Management Software) (the affected version unknown). It has been declared as problematic. Affected by this vulnerability is an unknown part of the component NSIP/SNIP. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability.

The weakness was shared 11/10/2021 as CTX330728. The advisory is shared at support.citrix.com. This vulnerability is known as CVE-2021-22956. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Network Management Software

Vendor

Citrix

Name

License

commercial

Website

Vendor: https://www.citrix.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/06/2021 🔍
11/10/2021 +308 days 🔍
11/10/2021 +0 days 🔍
11/12/2021 +2 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX330728
Status: Confirmed

CVE: CVE-2021-22956 (🔍)
GCVE (CVE): GCVE-0-2021-22956
GCVE (VulDB): GCVE-100-186469

Entryinfo

Created: 11/10/2021 13:17
Updated: 11/12/2021 12:17
Changes: 11/10/2021 13:17 (38), 11/12/2021 12:17 (1)
Complete: 🔍
Cache ID: 216::103