Bug 2277339 (CVE-2024-4195)

Summary: CVE-2024-4195 mattermost: fail to fully validate role changes leading to promote guests to team admins
Product: [Other] Security Response Reporter: Rohit Keshri <rkeshri>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: dfreiber, drow, gparvin, jburrell, lbainbri, njean, owatkins, pahickey, rhaigner, sidakwo, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Mattermost, where it failed to fully validate role changes. This flaw allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.
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Clone Of: Environment:
Last Closed: Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2277340, 2277341    
Bug Blocks: 2277330    

Description Rohit Keshri 2024-04-26 11:45:06 UTC
Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.

https://mattermost.com/security-updates

Comment 1 Rohit Keshri 2024-04-26 11:47:45 UTC
Created purple-mattermost tracking bugs for this issue:

Affects: epel-all [bug 2277340]
Affects: fedora-all [bug 2277341]