Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator     allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to     become an administrator by sending a malicious link to the instance administrator. (CVE-2023-3550)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 40 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2024-2c564b942d advisory.

    https://www.mediawiki.org/wiki/Release_notes/1.41




Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3671 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3671-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     November 28, 2023                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : mediawiki     Version        : 1:1.31.16-1+deb10u7     CVE ID         : CVE-2023-3550 CVE-2023-45362 CVE-2023-45363

    Multiple vulnerabilities were found in mediawiki, a website engine for     collaborative work, that could lead to information disclosure, privilege     escalation, or denial of service.

    CVE-2023-3550

        Carlos Bello reported a stored cross-site scripting (XSS)         vulnerability when uploading crafted XML file to Special:Upload,         which can lead to privilege escalation.  (However .xml file uploads         are not allowed in the default configuration.)

    CVE-2023-45362

        Tobias Frei discovered that diff-multi-sameuser (X intermediate         revisions by the same user not shown) ignores username suppression,         which can lead to information leak.

    CVE-2023-45363

        It was discovered that querying pages redirected to other variants         with `redirects` and `converttitles` parameters set would cause         a denial of service (unbounded loop and RequestTimeoutException).

    For Debian 10 buster, these problems have been fixed in version     1:1.31.16-1+deb10u7.

    We recommend that you upgrade your mediawiki packages.

    For the detailed security status of mediawiki please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/mediawiki

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5520 advisory.

    Multiple security issues were discovered in MediaWiki, a website engine for collaborative work, which     could result in cross-site scripting, denial of service or information disclosure For the oldstable     distribution (bullseye), these problems have been fixed in version 1:1.35.13-1~deb11u1. For the stable     distribution (bookworm), these problems have been fixed in version 1:1.39.5-1~deb12u1. We recommend that     you upgrade your mediawiki packages. For the detailed security status of mediawiki please refer to its     security tracker page at: https://security-tracker.debian.org/tracker/mediawiki

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the e59fed96-60da-11ee-9102-000c29de725b advisory.

  - Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator     allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to     become an administrator by sending a malicious link to the instance administrator. (CVE-2023-3550)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
246686	Linux Distros Unpatched Vulnerability : CVE-2023-3550	Nessus	Misc.	critical
195321	Fedora 40 : mediawiki / php-oojs-oojs-ui / php-wikimedia-cdb / etc (2024-2c564b942d)	Nessus	Fedora Local Security Checks	medium
186380	Debian dla-3671 : mediawiki - security update	Nessus	Debian Local Security Checks	medium
182866	Debian DSA-5520-1 : mediawiki - security update	Nessus	Debian Local Security Checks	medium
182415	FreeBSD : mediawiki -- multiple vulnerabilities (e59fed96-60da-11ee-9102-000c29de725b)	Nessus	FreeBSD Local Security Checks	critical

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