VDB-167956 · CVE-2021-21602 · GCVE-0-2021-21602

Jenkins up to LTS 2.263.1/2.274 File Browser link following

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.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Jenkins up to LTS 2.263.1/2.274. It has been rated as critical. This issue affects some unknown processing of the component File Browser. The manipulation leads to link following. The identification of this vulnerability is CVE-2021-21602. There is no exploit available. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability was found in Jenkins up to LTS 2.263.1/2.274 (Continuous Integration Software). It has been declared as critical. This vulnerability affects an unknown code block of the component File Browser. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 01/14/2021. The advisory is shared for download at jenkins.io. This vulnerability was named CVE-2021-21602. There are neither technical details nor an exploit publicly available.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Continuous Integration Software

Name

Jenkins

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

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: 🔍

Timelineinfo

01/04/2021 🔍
01/14/2021 +10 days 🔍
01/14/2021 +0 days 🔍
02/14/2021 +31 days 🔍

Sourcesinfo

Advisory: jenkins.io
Status: Not defined
Confirmation: 🔍

CVE: CVE-2021-21602 (🔍)
GCVE (CVE): GCVE-0-2021-21602
GCVE (VulDB): GCVE-100-167956

Entryinfo

Created: 01/14/2021 13:21
Updated: 02/14/2021 11:40
Changes: 01/14/2021 13:21 (36), 02/14/2021 11:34 (3), 02/14/2021 11:40 (18)
Complete: 🔍
Cache ID: 216:D44:103