Citrix ADC/Gateway 13.0-82.45 SAML Service Provider session fixiation

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
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.
4.3$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Citrix ADC and Gateway 13.0-82.45 and classified as critical. This impacts an unknown function of the component SAML Service Provider. This manipulation causes session fixiation. This vulnerability is handled as CVE-2021-22927. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Citrix ADC and Gateway 13.0-82.45 (Connectivity Software) and classified as critical. Affected by this vulnerability is an unknown part of the component SAML Service Provider. The manipulation with an unknown input leads to a session fixiation vulnerability. The CWE definition for the vulnerability is CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. As an impact it is known to affect confidentiality.

The weakness was released 08/06/2021 as CTX319135. It is possible to read the advisory at support.citrix.com. This vulnerability is known as CVE-2021-22927. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/06/2021).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

Vendor

Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Session fixiation
CWE: CWE-384
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/06/2021 🔍
08/06/2021 +211 days 🔍
08/06/2021 +0 days 🔍
08/10/2021 +4 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX319135
Status: Confirmed

CVE: CVE-2021-22927 (🔍)
GCVE (CVE): GCVE-0-2021-22927
GCVE (VulDB): GCVE-100-180211

Entryinfo

Created: 08/06/2021 08:23
Updated: 08/10/2021 08:59
Changes: 08/06/2021 08:23 (38), 08/10/2021 08:59 (2)
Complete: 🔍
Cache ID: 216::103

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

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