VDB-75714 · CVE-2015-2951 · BID 75021

F21 JWT up to 1.x Signature JWT.php input validation

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.
7.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in F21 JWT up to 1.x. Affected by this issue is some unknown functionality of the file JWT.php of the component Signature Handler. The manipulation results in input validation. This vulnerability is cataloged as CVE-2015-2951. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in F21 JWT up to 1.x. It has been classified as critical. Affected is some unknown functionality of the file JWT.php of the component Signature Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

JWT.php in F21 JWT before 2.0 allows remote attackers to bypass signature verification via crafted tokens.

The weakness was shared 06/05/2015 by Toshiharu Sugiyama (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2015-2951 since 04/07/2015. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

By approaching the search of inurl:JWT.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 75021†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: JWT 2.0
Patch: github.com

Timelineinfo

04/07/2015 🔍
06/03/2015 +57 days 🔍
06/05/2015 +2 days 🔍
06/05/2015 +0 days 🔍
06/07/2015 +2 days 🔍
05/20/2022 +2539 days 🔍

Sourcesinfo

Product: github.com

Advisory: a327cf9052df8f9f97728ca0b5fa78a8231b79b6
Researcher: Toshiharu Sugiyama
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-2951 (🔍)
GCVE (CVE): GCVE-0-2015-2951
GCVE (VulDB): GCVE-100-75714
SecurityFocus: 75021 - F21 JWT CVE-2015-2951 Security Bypass Vulnerability

Entryinfo

Created: 06/07/2015 17:54
Updated: 05/20/2022 08:37
Changes: 06/07/2015 17:54 (51), 04/04/2019 06:36 (4), 05/20/2022 08:37 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!