Bug 2240807 (CVE-2023-3550) - CVE-2023-3550 mediawiki: stored XSS leads to privilege escalation
Summary: CVE-2023-3550 mediawiki: stored XSS leads to privilege escalation
Keywords:
Status: NEW
Alias: CVE-2023-3550
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2240808
Blocks: 2240809
TreeView+ depends on / blocked
 
Reported: 2023-09-26 16:53 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-09-26 16:53 UTC (History)
0 users

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2023-09-26 16:53:12 UTC 
Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.

Reference:
https://fluidattacks.com/advisories/blondie/
Comment 1 Guilherme de Almeida Suckevicz 2023-09-26 16:53:25 UTC 
Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 2240808]
Note You need to log in before you can comment on or make changes to this bug.