CVE-2021-21691

Creating symbolic links is possible without the 'symlink' agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:jenkins:jenkins:::::lts:::*
	cpe:2.3:a:jenkins:jenkins:::::-:::*

History

22 Nov 2023, 21:23

Type	Values Removed	Values Added
CWE		CWE-59

25 Oct 2023, 18:16

Type	Values Removed	Values Added
CWE	~~CWE-863~~

09 Nov 2021, 19:35

Type	Values Removed	Values Added
References	~~(CONFIRM) https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 -~~	(CONFIRM) https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8
CPE		cpe:2.3:a:jenkins:jenkins:::::lts:::* cpe:2.3:a:jenkins:jenkins:::::-:::*

04 Nov 2021, 17:25

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-11-04 17:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-21691

Mitre link : CVE-2021-21691

CVE.ORG link : CVE-2021-21691

JSON object : View

Products Affected

jenkins

jenkins

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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