Vulnerability CVE-2020-35479: Information

Description

MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. Language::translateBlockExpiry itself does not escape in all code paths. For example, the return of Language::userTimeAndDate is is always unsafe for HTML in a month value. This affects MediaWiki 1.12.0 and later.

Severity: MEDIUM (6.1) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

URL: https://nvd.nist.gov/vuln/detail/CVE-2020-35479
Published: Dec. 18, 2020
Modified: Nov. 7, 2023
Error type identifier: CWE-79

Fixed packages

Package name
Branch
Fixed in version
Version from repository
Errata ID
Task #
State
mediawikisisyphus1.35.1-alt11.40.1-alt2ALT-PU-2020-3554-1263831Fixed
mediawikip101.35.1-alt11.40.1-alt2ALT-PU-2020-3554-1263831Fixed
mediawikip91.35.1-alt11.36.1-alt1ALT-PU-2020-3568-1263837Fixed
mediawikic10f11.35.1-alt11.37.2-alt1ALT-PU-2020-3554-1263831Fixed

References to Advisories, Solutions, and Tools

Hyperlink
Resource
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
  • Mailing List
  • Release Notes
  • Vendor Advisory
https://phabricator.wikimedia.org/T268938
  • Exploit
  • Vendor Advisory
DSA-4816
  • Third Party Advisory
[debian-lts-announce] 20201223 [SECURITY] [DLA 2504-1] mediawiki security update
  • Mailing List
  • Third Party Advisory
FEDORA-2020-0be2d40e13

      1. Configuration 1

        cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
        Start including
        1.12.0
        End excliding
        1.35.1

        Configuration 2

        cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
        cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

        Configuration 3

        cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
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