Vulnerability CVE-2021-39878

Vulnerability Name:

CVE-2021-39878 (CCN-210850)

Assigned:

2021-10-01

Published:

2021-10-01

Updated:

2021-10-12

Summary:

A stored Reflected Cross-Site Scripting vulnerability in the Jira integration in GitLab version 13.0 up to 14.3.1 allowed an attacker to execute arbitrary javascript code.

CVSS v3 Severity:

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

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

5.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N)
5.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/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): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

CVSS v2 Severity:

3.5 Low (CVSS v2 Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N)

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

4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:N/A:N)

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

Vulnerability Type:

CWE-79

Vulnerability Consequences:

Cross-Site Scripting

References:

Source: MITRE
Type: CNA
CVE-2021-39878

Source: XF
Type: UNKNOWN
gitlab-cve202139878-xss(210850)

Source: CCN
Type: GitLab Web site
CVE-2021-39878

Source: CONFIRM
Type: Vendor Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39878.json

Source: MISC
Type: Broken Link
https://gitlab.com/gitlab-org/gitlab/-/issues/334043

Source: MISC
Type: Permissions Required
https://hackerone.com/reports/1194254

Vulnerable Configuration:

Configuration 1:

cpe:/a:gitlab:gitlab:*:*:*:*:community:*:*:* (Version >= 13.0.0 and < 14.1.7)

OR cpe:/a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* (Version >= 13.0.0 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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