Citrix Gateway/ADC VPN/AAA Virtual Server excessive authentication

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 (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Citrix Gateway and ADC and classified as problematic. Impacted is an unknown function of the component VPN/AAA Virtual Server. The manipulation leads to excessive authentication. This vulnerability is documented as CVE-2022-27516. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Citrix Gateway and ADC (Connectivity Software) (the affected version unknown) and classified as problematic. This issue affects an unknown part of the component VPN/AAA Virtual Server. The manipulation with an unknown input leads to a excessive authentication vulnerability. Using CWE to declare the problem leads to CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. Impacted is confidentiality. The summary by CVE is:

User login brute force protection functionality bypass

The weakness was released 11/09/2022 as CTX463706. It is possible to read the advisory at support.citrix.com. The identification of this vulnerability is CVE-2022-27516 since 03/21/2022. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Citrix Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Excessive authentication
CWE: CWE-307 / CWE-799 / CWE-400
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/21/2022 🔍
11/09/2022 +233 days 🔍
11/09/2022 +0 days 🔍
12/10/2022 +31 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX463706
Status: Confirmed

CVE: CVE-2022-27516 (🔍)
GCVE (CVE): GCVE-0-2022-27516
GCVE (VulDB): GCVE-100-213251

Entryinfo

Created: 11/09/2022 11:21
Updated: 12/10/2022 21:51
Changes: 11/09/2022 11:21 (40), 12/10/2022 21:51 (22)
Complete: 🔍
Cache ID: 216::103

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