WordPress 3.6 functions.php get_allowed_mime_types input validation

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in WordPress 3.6. Affected by this issue is the function get_allowed_mime_types of the file wp-includes/functions.php. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2013-5738. The attack may be launched remotely. Furthermore, there is an exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in WordPress 3.6 (Content Management System) and classified as problematic. This vulnerability affects the function get_allowed_mime_types of the file wp-includes/functions.php. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity. CVE summarizes:

The get_allowed_mime_types function in wp-includes/functions.php in WordPress before 3.6.1 does not require the unfiltered_html capability for uploads of .htm and .html files, which might make it easier for remote authenticated users to conduct cross-site scripting (XSS) attacks via a crafted file.

The weakness was shared 09/11/2013 as confirmed changelog entry (Website). The advisory is shared for download at codex.wordpress.org. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2013-5738 since 09/11/2013. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. By approaching the search of inurl:wp-includes/functions.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 69895 (Debian DSA-2757-1 : wordpress - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 12751 (WordPress Multiple Security Vulnerabilities).

Upgrading to version 3.6.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at core.trac.wordpress.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (87146), Tenable (69895), SecurityFocus (BID 62424†), OSVDB (97214†) and Secunia (SA54807†). The entries VDB-10260, VDB-10261, VDB-10262 and VDB-10263 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 69895
Nessus Name: Debian DSA-2757-1 : wordpress - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892757
OpenVAS Name: Debian Security Advisory DSA 2757-1 (wordpress - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: WordPress 3.6.1
Patch: core.trac.wordpress.org

Timelineinfo

09/11/2013 🔍
09/11/2013 +0 days 🔍
09/11/2013 +0 days 🔍
09/11/2013 +0 days 🔍
09/11/2013 +0 days 🔍
09/12/2013 +1 days 🔍
09/12/2013 +0 days 🔍
09/13/2013 +1 days 🔍
09/16/2013 +3 days 🔍
09/22/2013 +6 days 🔍
05/24/2021 +2801 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: 25322
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-5738 (🔍)
GCVE (CVE): GCVE-0-2013-5738
GCVE (VulDB): GCVE-100-10264

OVAL: 🔍
IAVM: 🔍

X-Force: 87146
SecurityFocus: 62424 - WordPress 'get_allowed_mime_types()' Function Security Weakness
Secunia: 54807 - Debian update for wordpress, Moderately Critical
OSVDB: 97214
Vulnerability Center: 41561 - WordPress <3.6.1 'get_allows_mime_types\x27 Allows Remote XSS Attacks via a Crafted File, Low

See also: 🔍

Entryinfo

Created: 09/13/2013 17:22
Updated: 05/24/2021 16:25
Changes: 09/13/2013 17:22 (85), 05/11/2017 08:58 (4), 05/24/2021 16:17 (3), 05/24/2021 16:25 (1)
Complete: 🔍
Committer:
Cache ID: 216:896:103

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