Vulnerabilities > CVE-2013-7444 - Information Exposure vulnerability in Mediawiki
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
NONE Availability impact
NONE Summary
The Special:Contributions page in MediaWiki before 1.22.0 allows remote attackers to determine if an IP is autoblocked via the "Change block" text.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
- Footprinting An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Browser Fingerprinting An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
- Session Credential Falsification through Prediction This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2015-13920.NASL description - (T94116) SECURITY: Compare API watchlist token in constant time * (T97391) SECURITY: Escape error message strings in thumb.php * (T106893) SECURITY: Don last seen 2020-06-05 modified 2015-08-31 plugin id 85698 published 2015-08-31 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85698 title Fedora 23 : mediawiki-1.25.2-2.fc23 (2015-13920) NASL family Fedora Local Security Checks NASL id FEDORA_2015-122A831A05.NASL description - (T94116) SECURITY: Compare API watchlist token in constant time - (T97391) SECURITY: Escape error message strings in thumb.php - (T106893) SECURITY: Don last seen 2020-06-05 modified 2016-07-14 plugin id 92047 published 2016-07-14 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/92047 title Fedora 22 : mediawiki (2015-122a831a05) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_6241B5DF42A111E593AD002590263BF5.NASL description MediaWiki reports : Internal review discovered that Special:DeletedContributions did not properly protect the IP of autoblocked users. This fix makes the functionality of Special:DeletedContributions consistent with Special:Contributions and Special:BlockList. Internal review discovered that watchlist anti-csrf tokens were not being compared in constant time, which could allow various timing attacks. This could allow an attacker to modify a user last seen 2020-06-01 modified 2020-06-02 plugin id 85428 published 2015-08-17 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85428 title FreeBSD : mediawiki -- multiple vulnerabilities (6241b5df-42a1-11e5-93ad-002590263bf5)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165193.html
- http://www.openwall.com/lists/oss-security/2015/08/12/6
- http://www.openwall.com/lists/oss-security/2015/08/27/6
- https://github.com/wikimedia/mediawiki/commit/dc2966bd05b69321300c63fd0bd78e7c78ecea6e
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-August/000179.html
- https://phabricator.wikimedia.org/T48457