Vulnerability Details : CVE-2020-10534
In the GlobalBlocking extension before 2020-03-10 for MediaWiki through 1.34.0, an issue related to IP range evaluation resulted in blocked users re-gaining escalated privileges. This is related to the case in which an IP address is contained in two ranges, one of which is locally disabled.
Products affected by CVE-2020-10534
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-10534
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-10534
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-10534
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-10534
-
https://phabricator.wikimedia.org/T229731
⚓ T229731 Global blocks: if an IP is within two ranges and one is locally disabled, GlobalBlock won't listen to the other oneVendor Advisory
-
https://gerrit.wikimedia.org/r/#/q/I9cc5fb2c08c78bbd797a5fc6d89f4577c8cc118b
I9cc5fb2c08c78bbd797a5fc6d89f4577c8cc118b | gerrit.wikimedia Code ReviewPatch;Vendor Advisory
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