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[email protected]CVE-2021-39896

HistoryOct 04, 2021 - 5:15 p.m.

CVE-2021-39896

2021-10-0417:15:08

[email protected]

web.nvd.nist.gov

cve-2021-39896

gitlab

admin impersonation

repudiation issues

5.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

3.8 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

3.9 Low

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

22.9%

JSON

In all versions of GitLab CE/EE since version 8.0, when an admin uses the impersonate feature twice and stops impersonating, the admin may be logged in as the second user they impersonated, which may lead to repudiation issues.

Affected configurations

NVD

Node

gitlabgitlabRange8.0.0–14.1.7community

gitlabgitlabRange8.0.0–14.1.7enterprise

gitlabgitlabRange14.2–14.2.5community

gitlabgitlabRange14.2–14.2.5enterprise

gitlabgitlabRange14.3–14.3.1community

gitlabgitlabRange14.3–14.3.1enterprise

CPENameOperatorVersion
gitlab:gitlabgitlablt14.1.7
gitlab:gitlabgitlablt14.2.5
gitlab:gitlabgitlablt14.3.1

CPE	Name	Operator	Version
gitlab:gitlab	gitlab	lt	14.1.7
gitlab:gitlab	gitlab	lt	14.2.5
gitlab:gitlab	gitlab	lt	14.3.1

CNA Affected

[
  {
    "product": "GitLab",
    "vendor": "GitLab",
    "versions": [
      {
        "status": "affected",
        "version": ">=8.0, <14.1.7"
      },
      {
        "status": "affected",
        "version": ">=14.2, <14.2.5"
      },
      {
        "status": "affected",
        "version": ">=14.3, <14.3.1"
      }
    ]
  }
]