Vulnerability Details : CVE-2020-35477
MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the "Change visibility of selected log entries" checkbox (or a tags checkbox) next to it, there is a redirection to the main page's action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).
Products affected by CVE-2020-35477
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-35477
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-35477
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2020-35477
-
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-35477
-
https://www.debian.org/security/2020/dsa-4816
Debian -- Security Information -- DSA-4816-1 mediawikiThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html
[SECURITY] [DLA 2504-1] mediawiki security updateMailing List;Third Party Advisory
-
https://phabricator.wikimedia.org/T205908
⚓ T205908 Unable to change visibility of log entries when MediaWiki:Mainpage uses Special:MyLanguage (CVE-2020-35477)Exploit;Issue Tracking;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
[SECURITY] Fedora 33 Update: mediawiki-1.35.1-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
[MediaWiki-announce] Security and maintenance release: 1.31.11 / 1.35.1Mailing List;Release Notes;Vendor Advisory
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