fusionauth-saml 0.2.3 Signature SAML Assertion improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in fusionauth-saml 0.2.3. This vulnerability affects unknown code of the component Signature Handler. Performing a manipulation as part of SAML Assertion results in improper authentication. This vulnerability is identified as CVE-2020-12676. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in fusionauth-saml 0.2.3. It has been classified as critical. This affects some unknown processing of the component Signature Handler. The manipulation as part of a SAML Assertion leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

FusionAuth fusionauth-samlv2 0.2.3 allows remote attackers to forge messages and bypass authentication via a SAML assertion that lacks a Signature element, aka a "Signature exclusion attack".

The weakness was released 10/02/2020 as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2020-12676 since 05/06/2020. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
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

05/06/2020 🔍
10/02/2020 +149 days 🔍
10/03/2020 +1 days 🔍
11/16/2020 +44 days 🔍

Sourcesinfo

Advisory: seclists.org
Status: Not defined

CVE: CVE-2020-12676 (🔍)
GCVE (CVE): GCVE-0-2020-12676
GCVE (VulDB): GCVE-100-162231

Entryinfo

Created: 10/03/2020 06:23
Updated: 11/16/2020 07:49
Changes: 10/03/2020 06:23 (38), 10/03/2020 06:28 (3), 11/15/2020 10:16 (5), 11/16/2020 07:49 (14)
Complete: 🔍
Cache ID: 216::103

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