Auth0 Auth0-WCF-Service-JWT up to 1.0.3 Error Message Signature improper 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
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.
7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Auth0 Auth0-WCF-Service-JWT up to 1.0.3. This affects an unknown part of the component Error Message Handler. Executing a manipulation can lead to improper authentication (Signature). This vulnerability is handled as CVE-2019-7644. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Auth0 Auth0-WCF-Service-JWT up to 1.0.3 and classified as problematic. This vulnerability affects some unknown functionality of the component Error Message Handler. The manipulation with an unknown input leads to a improper authentication vulnerability (Signature). The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality. CVE summarizes:

Auth0 Auth0-WCF-Service-JWT before 1.0.4 leaks the expected JWT signature in an error message when it cannot successfully validate the JWT signature. If this error message is presented to an attacker, they can forge an arbitrary JWT token that will be accepted by the vulnerable application.

The bug was discovered 02/15/2019. The weakness was released 04/11/2019. This vulnerability was named CVE-2019-7644 since 02/08/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful 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 55 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.0.4 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Signature
Class: Improper authentication / Signature
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Auth0-WCF-Service-JWT 1.0.4

Timelineinfo

02/08/2019 🔍
02/15/2019 +7 days 🔍
04/11/2019 +55 days 🔍
04/12/2019 +1 days 🔍
08/29/2023 +1600 days 🔍

Sourcesinfo

Advisory: auth0.com
Status: Not defined

CVE: CVE-2019-7644 (🔍)
GCVE (CVE): GCVE-0-2019-7644
GCVE (VulDB): GCVE-100-133366

Entryinfo

Created: 04/12/2019 06:56
Updated: 08/29/2023 08:22
Changes: 04/12/2019 06:56 (56), 05/29/2020 10:57 (1), 08/29/2023 08:22 (4)
Complete: 🔍
Cache ID: 216::103

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