CVE-2021-21693

When creating temporary files, agent-to-controller access to create those files is only checked after they've been created 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
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

21 Nov 2024, 05:48

Type	Values Removed	Values Added
References	~~() https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 - Vendor Advisory~~	() https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 - Vendor Advisory

25 Oct 2022, 16:00

Type	Values Removed	Values Added
CWE	~~CWE-285~~	CWE-863

09 Nov 2021, 19:26

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
CPE		cpe:2.3:a:jenkins:jenkins:::::-:::* cpe:2.3:a:jenkins:jenkins:::::lts:::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8

04 Nov 2021, 17:25

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-11-04 17:15

Updated : 2024-11-21 05:48

NVD link : CVE-2021-21693

Mitre link : CVE-2021-21693

CVE.ORG link : CVE-2021-21693

JSON object : View

Products Affected

jenkins

jenkins

CWE

CWE-863

Incorrect Authorization

{"id": "CVE-2021-21693", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-11-04T17:15:08.717", "references": [{"url": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455", "tags": ["Vendor Advisory"], "source": "jenkinsci-cert@googlegroups.com"}, {"url": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "When creating temporary files, agent-to-controller access to create those files is only checked after they've been created in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier."}, {"lang": "es", "value": "Cuando son creados archivos temporales, el acceso de agente a controlador para crear esos archivos s\u00f3lo se comprueba despu\u00e9s de haberlos creado en Jenkins versiones 2.318 y anteriores, LTS versiones 2.303.2 y anteriores"}], "lastModified": "2024-11-21T05:48:50.820", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "0B0C915B-C3A9-4BB9-B122-749CF43BB7DE", "versionEndExcluding": "2.303.3"}, {"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "3D231DBA-462F-4BC5-8F04-23109A7EF1F8", "versionEndExcluding": "2.319"}], "operator": "OR"}]}], "sourceIdentifier": "jenkinsci-cert@googlegroups.com"}