Vulnerability CVE-2021-39893

Vulnerability Name:

CVE-2021-39893 (CCN-210747)

Assigned:

2021-10-01

Published:

2021-10-01

Updated:

2021-10-09

Summary:

A potential DOS vulnerability was discovered in GitLab starting with version 9.1 that allowed parsing files without authorisation.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/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): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

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

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

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

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

Vulnerability Type:

CWE-862

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-39893

Source: XF
Type: UNKNOWN
gitlab-cve202139893-dos(210747)

Source: CCN
Type: GitLab Web site
CVE-2021-39893

Source: CONFIRM
Type: Vendor Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39893.json

Source: MISC
Type: Broken Link
https://gitlab.com/gitlab-org/gitlab/-/issues/340076

Vulnerable Configuration:

Configuration 1:

cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 9.1.0 and < 14.1.7)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 9.1.0 and < 14.1.7)

OR cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 14.2.0 and < 14.2.5)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 14.2.0 and < 14.2.5)

OR cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 14.3.0 and < 14.3.1)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 14.3.0 and < 14.3.1)

Denotes that component is vulnerable

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