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CVE-2019-12467

CVE-2019-12467: MediaWiki Incorrect Access Control vulnerability

5.3

CVSS Score
3.0

Basic Information

CVE ID
CVE-2019-12467
GHSA ID
GHSA-6vfg-8ppv-h5hg
EPSS Score
0.56036%
CWE
CWE-284
Published
5/24/2022
Updated
5/15/2024
KEV Status
No
Technology
TechnologyPHP

Technical Details

CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Package NameEcosystemVulnerable VersionsFirst Patched Version
mediawiki/corecomposer< 1.27.61.27.6
mediawiki/corecomposer>= 1.30.0, < 1.30.21.30.2
mediawiki/corecomposer>= 1.31.0, < 1.31.21.31.2
mediawiki/corecomposer>= 1.32.0, < 1.32.21.32.2

Vulnerability Intelligence
Miggo AIMiggo AI

Miggo AIRoot Cause Analysis

The vulnerability stemmed from missing access controls in the Special:ChangeEmail functionality. The Phabricator task T209794 specifically shows patches adding rate limiting (User::pingLimiter) and block checks to SpecialChangeEmail::execute. The CVE description confirms attackers could abuse this endpoint for spam due to missing rate limits. The execute function is the entry point for this special page's functionality, making it the logical location for the vulnerability before security controls were added.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

M**i*Wiki t*rou** *.**.* **s In*orr**t ****ss *ontrol (issu* * o* *). * sp*mm*r **n us* Sp**i*l:***n***m*il to s*n* out sp*m wit* no r*t* limitin* or **ility to *lo*k t**m. *ix** in *.**.*, *.**.*, *.**.* *n* *.**.*.

Reasoning

T** vuln*r**ility st*mm** *rom missin* ****ss *ontrols in t** Sp**i*l:***n***m*il *un*tion*lity. T** P***ri**tor t*sk T****** sp**i*i**lly s*ows p*t***s ***in* r*t* limitin* (Us*r::pin*Limit*r) *n* *lo*k ****ks to Sp**i*l***n***m*il::*x**ut*. T** *V*