Vulnerability CVE-2021-22218

Vulnerability Name:

CVE-2021-22218 (CCN-203292)

Assigned:

2021-06-08

Published:

2021-06-08

Updated:

2022-07-22

Summary:

All versions of GitLab CE/EE starting from 12.8 before 13.10.5, all versions starting from 13.11 before 13.11.5, and all versions starting from 13.12 before 13.12.2 were affected by an issue in the handling of x509 certificates that could be used to spoof author of signed commits.

CVSS v3 Severity:

2.6 Low (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N)
2.3 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/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): None Integrity (I): Low 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:N/I:L/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:N/I:L/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): None Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

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

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

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

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

Vulnerability Type:

CWE-295

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2021-22218

Source: XF
Type: UNKNOWN
gitlab-cve202122218-sec-bypass(203292)

Source: CCN
Type: GitLab Web site
CVE-2021-22218.json

Source: CONFIRM
Type: Vendor Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22218.json

Source: MISC
Type: Broken Link
https://gitlab.com/gitlab-org/gitlab/-/issues/297665

Source: MISC
Type: Permissions Required, Third Party Advisory
https://hackerone.com/reports/1077019

Vulnerable Configuration:

Configuration 1:

cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 13.12.0 and < 13.12.2)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 13.11.0 and < 13.11.5)

OR cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 13.12.0 and < 13.12.2)

OR cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 13.11.0 and < 13.11.5)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 12.8.0 and < 13.10.5)

OR cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 12.8.0 and < 13.10.5)

Configuration CCN 1:

cpe:/a:gitlab:gitlab:13.10.4:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:13.11.0:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:13.11.4:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:13.12.0:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:13.12.1:*:*:*:community:*:*:*

OR cpe:/a:gitlab:gitlab:10.5:*:*:*:community:*:*:*

Denotes that component is vulnerable

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