CVE-2021-21687

CVSS V2 Medium 6.4 CVSS V3 Critical 9.1

Description

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.

Overview

CVE ID
CVE-2021-21687

Assigner
jenkinsci-cert@googlegroups.com

Vulnerability Status
Analyzed

Published Version
2021-11-04T17:15:08

Last Modified Date
2021-11-08T16:47:05

Weakness Enumerations

CWE	URL
CWE-862	http://cwe.mitre.org/data/definitions/862.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:jenkins:jenkins:::::lts:::*	1	OR		2.303.3
cpe:2.3:a:jenkins:jenkins:::::-:::*	1	OR		2.319

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:P/I:P/A:N

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
6.4

Severity
MEDIUM

Exploitability Score
10

Impact Score
4.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
9.1

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.2

References

Reference URL	Reference Tags
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-21687
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21687

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:48:00				Added to TrackCVE
2022-12-05 13:51:34	2021-11-04T17:15Z	2021-11-04T17:15:08	CVE Published Date	updated
2022-12-05 13:51:34		2021-11-08T16:47:05	CVE Modified Date	updated
2022-12-05 13:51:34		Analyzed	Vulnerability Status	updated