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Debian LTS: Security Advisory for mediawiki (DLA-2504-1)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

3 years ago

Modified

Modified

3 years ago

Summary

The remote host is missing an update for the 'mediawiki' package(s) announced via the DLA-2504-1 advisory.

Insight

Insight

Multiple security issues were discovered in MediaWiki, a website engine for collaborative work. CVE-2020-15005 Private wikis behind a caching server using the img_auth.php image authorization security feature may have had their files cached publicly, so any unauthorized user could view them. CVE-2020-35477 Blocks legitimate attempts to hide log entries in some situations. CVE-2020-35479 Allows XSS via BlockLogFormatter.php. Language::translateBlockExpiry itself does not escape in all code paths. For example, the return of Language::userTimeAndDate is always unsafe for HTML in a month value. CVE-2020-35480 Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers.

Affected Software

Affected Software

'mediawiki' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

For Debian 9 stretch, these problems have been fixed in version 1:1.27.7-1~deb9u7. We recommend that you upgrade your mediawiki packages.

Common Vulnerabilities and Exposures (CVE)