Vulnerability CVE-2021-39897

Vulnerability Name:

CVE-2021-39897 (CCN-212934)

Assigned:

2021-11-04

Published:

2021-11-04

Updated:

2021-11-08

Summary:

Improper access control in GitLab CE/EE version 10.5 and above allowed subgroup members with inherited access to a project from a parent group to still have access even after the subgroup is transferred

CVSS v3 Severity:

5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

2.6 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N)
2.3 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

2.1 Low (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-281

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2021-39897

Source: XF
Type: UNKNOWN
gitlab-cve202139897-sec-bypass(212934)

Source: CCN
Type: GitLab Web site
CVE-2021-39897

Source: CONFIRM
Type: Vendor Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39897.json

Source: MISC
Type: Broken Link
https://gitlab.com/gitlab-org/gitlab/-/issues/341017

Source: MISC
Type: Permissions Required, Third Party Advisory
https://hackerone.com/reports/1330806

Vulnerable Configuration:

Configuration 1:

cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 12.9.0 and < 12.9.8)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 12.9.0 and < 12.9.8)

OR cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 12.10.0 and < 12.10.7)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 12.10.0 and < 12.10.7)

OR cpe:/a:gitlab:gitlab:13.0.0:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:13.0.0:*:*:*:enterprise:*:*:*

Configuration CCN 1:

cpe:/a:gitlab:gitlab:13.0:*:*:*:*:*:*:*

OR cpe:/a:gitlab:gitlab:12.9.7:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:12.10.6:*:*:*:community:*:*:*

Denotes that component is vulnerable

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