MediaWiki up to 1.27.3/1.28.2/1.29.1 URL Escape $wgShowExceptionDetails cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaWiki up to 1.27.3/1.28.2/1.29.1. It has been declared as problematic. Impacted is an unknown function of the component URL Escape Handler. Executing a manipulation of the argument $wgShowExceptionDetails can lead to cross site scripting. The identification of this vulnerability is CVE-2017-8808. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in MediaWiki up to 1.27.3/1.28.2/1.29.1 (Content Management System) and classified as problematic. This vulnerability affects some unknown processing of the component URL Escape Handler. The manipulation of the argument $wgShowExceptionDetails with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 has XSS when the $wgShowExceptionDetails setting is false and the browser sends non-standard URL escaping.

The bug was discovered 11/14/2017. The weakness was shared 11/15/2017 (Website). The advisory is shared for download at lists.wikimedia.org. This vulnerability was named CVE-2017-8808 since 05/07/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104693 (FreeBSD : mediawiki -- multiple vulnerabilities (298829e2-ccce-11e7-92e4-000c29649f92)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277023 (Fedora Security Update for mediawiki (FEDORA-2017-59251d350d)).

Upgrading to version 1.27.4, 1.28.3 or 1.29.2 eliminates this vulnerability. A possible mitigation has been published 4 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104693). The entries VDB-102879, VDB-109445, VDB-109446 and VDB-109447 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104693
Nessus Name: FreeBSD : mediawiki -- multiple vulnerabilities (298829e2-ccce-11e7-92e4-000c29649f92)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 863854
OpenVAS Name: MediaWiki Multiple Vulnerabilities - November17 (Linux)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: MediaWiki 1.27.4/1.28.3/1.29.2

Timelineinfo

05/07/2017 🔍
11/14/2017 +191 days 🔍
11/15/2017 +1 days 🔍
11/15/2017 +0 days 🔍
11/16/2017 +1 days 🔍
11/19/2017 +3 days 🔍
11/20/2017 +1 days 🔍
01/23/2021 +1160 days 🔍

Sourcesinfo

Product: mediawiki.org

Advisory: lists.wikimedia.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-8808 (🔍)
GCVE (CVE): GCVE-0-2017-8808
GCVE (VulDB): GCVE-100-109444

OVAL: 🔍

SecurityTracker: 1039812

See also: 🔍

Entryinfo

Created: 11/16/2017 10:51
Updated: 01/23/2021 18:31
Changes: 11/16/2017 10:51 (76), 12/06/2019 19:29 (3), 01/23/2021 18:31 (2)
Complete: 🔍
Cache ID: 216::103

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