CVE-2021-39871

In all versions of GitLab CE/EE since version 13.0, an instance that has the setting to disable Bitbucket Server import enabled is bypassed by an attacker making a crafted API call.

CVSS v3.0 4.3 MEDIUM
CVSS v2.0 4.0 MEDIUM

4.3^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39871.json	Vendor Advisory
https://hackerone.com/reports/630263	Permissions Required Third Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/340782	Broken Link

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gitlab:gitlab:4.3.0::::community:::
	cpe:2.3:a:gitlab:gitlab:4.3.0::::enterprise:::
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*

Information

Published : 2021-10-04 10:15

Updated : 2021-10-12 12:52

NVD link : CVE-2021-39871

Mitre link : CVE-2021-39871

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

gitlab

gitlab

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39871.json", "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39871.json", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://hackerone.com/reports/630263", "name": "https://hackerone.com/reports/630263", "tags": ["Permissions Required", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/340782", "name": "https://gitlab.com/gitlab-org/gitlab/-/issues/340782", "tags": ["Broken Link"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In all versions of GitLab CE/EE since version 13.0, an instance that has the setting to disable Bitbucket Server import enabled is bypassed by an attacker making a crafted API call."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-39871", "ASSIGNER": "cve@gitlab.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}}, "publishedDate": "2021-10-04T17:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:gitlab:gitlab:4.3.0:*:*:*:community:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:gitlab:gitlab:4.3.0:*:*:*:enterprise:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "14.1.7", "versionStartIncluding": "13.0.0"}, {"cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "14.1.7", "versionStartIncluding": "13.0.0"}, {"cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "14.2.5", "versionStartIncluding": "14.2.0"}, {"cpe23Uri": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "14.2.5", "versionStartIncluding": "14.2.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-10-12T19:52Z"}