VDB-139615 · CVE-2016-5431 · GCVE-0-2016-5431

GREE PHP JOSE Library up to 2.2.0 JWS Signature cryptographic issue

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.
7.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in GREE PHP JOSE Library up to 2.2.0. It has been rated as critical. This vulnerability affects unknown code of the component JWS. This manipulation causes cryptographic issue (Signature). This vulnerability is registered as CVE-2016-5431. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in GREE PHP JOSE Library up to 2.2.0 (Software Library). It has been declared as critical. Affected by this vulnerability is an unknown function of the component JWS. The manipulation with an unknown input leads to a cryptographic issue vulnerability (Signature). The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

TThe PHP JOSE Library by Gree Inc. version <= 2.2.0 is vulnerable to key confusion/algorithm substitution in the JWS component resulting in bypassing the signature verification via crafted tokens.

The weakness was published 08/07/2019 (GitHub Repository). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2016-5431 since 06/10/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

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

Type

Software Library

Vendor

GREE

Name

PHP JOSE Library

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Signature
Class: Cryptographic issue / Signature
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

06/10/2016 🔍
08/07/2019 +1153 days 🔍
08/07/2019 +0 days 🔍
11/21/2023 +1567 days 🔍

Sourcesinfo

Advisory: 1cce55e27adf0274193eb1cd74b927a398a3df4b
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5431 (🔍)
GCVE (CVE): GCVE-0-2016-5431
GCVE (VulDB): GCVE-100-139615

Entryinfo

Created: 08/07/2019 19:39
Updated: 11/21/2023 09:58
Changes: 08/07/2019 19:39 (56), 07/22/2020 12:05 (1), 11/21/2023 09:58 (5)
Complete: 🔍
Cache ID: 216::103