KDE Konqueror 4.7.3 Iframe Context Menu Widget Renderer render_replaced.cpp resource management

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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in KDE Konqueror 4.7.3. The affected element is an unknown function of the file khtml/rendering/render_replaced.cpp of the component Iframe Context Menu Widget Renderer. Such manipulation with the input document.body.innerHTML = "<iframe src=about:konqueror></iframe>" leads to resource management. This vulnerability is listed as CVE-2012-4515. In addition, an exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in KDE Konqueror 4.7.3 (Web Browser). It has been rated as critical. Affected by this issue is some unknown functionality of the file khtml/rendering/render_replaced.cpp of the component Iframe Context Menu Widget Renderer. The manipulation with the input value document.body.innerHTML = "<iframe src=about:konqueror></iframe>" leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

Use-after-free vulnerability in khtml/rendering/render_replaced.cpp in Konqueror in KDE 4.7.3, when the context menu is shown, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by accessing an iframe when it is being updated.

The weakness was presented 10/10/2012 by Tim Brown with Nth Dimension as NDSA20121010 as confirmed advisory (Website). The advisory is shared for download at nth-dimension.org.uk. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2012-4515 since 08/21/2012. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. By accessing the context menu for a given iframe whilst the iframe is being updated by the parent can lead to attempts to access no- onger existing objects.

A public exploit has been developed by Tim Brown in HTML/Javascript and been published immediately after the advisory. The exploit is available at nth-dimension.org.uk. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 864868 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166215 (SUSE Enterprise Linux Security Update for kdelibs4 (SUSE-SU-2013:1559-1)).

Applying the patch Revision 4f2eb356 is able to eliminate this problem. The bugfix is ready for download at projects.kde.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (22406), Tenable (864868), OSVDB (86826†), Secunia (SA51097†) and Vulnerability Center (SBV-37249†). seclists.org is providing further details. See VDB-6847, VDB-6849, VDB-6851 and VDB-52161 for similar entries. 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: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Tim Brown
Programming Language: 🔍
Download: 🔍

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Nessus ID: 864868
Nessus File: 🔍
Nessus Risk: 🔍

OpenVAS ID: 864868
OpenVAS Name: Fedora Update for kdelibs FEDORA-2012-17385
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: Revision 4f2eb356

Timelineinfo

10/30/2011 🔍
02/16/2012 +109 days 🔍
02/20/2012 +4 days 🔍
08/21/2012 +183 days 🔍
10/10/2012 +50 days 🔍
10/10/2012 +0 days 🔍
10/31/2012 +21 days 🔍
11/01/2012 +1 days 🔍
11/01/2012 +0 days 🔍
11/04/2012 +3 days 🔍
11/11/2012 +7 days 🔍
11/11/2012 +0 days 🔍
11/15/2012 +4 days 🔍
11/19/2012 +4 days 🔍
09/19/2024 +4322 days 🔍

Sourcesinfo

Vendor: kde.org

Advisory: NDSA20121010
Researcher: Tim Brown
Organization: Nth Dimension
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4515 (🔍)
GCVE (CVE): GCVE-0-2012-4515
GCVE (VulDB): GCVE-100-6848

OVAL: 🔍

Secunia: 51097 - KDE kdelibs Multiple Vulnerabilities, Highly Critical
OSVDB: 86826
Vulnerability Center: 37249 - KDE Konqueror 4.7.3 \x27render_replaced.cpp\x27 Use-After-Free Vulnerability Allows Remote DoS, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
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Entryinfo

Created: 11/04/2012 14:59
Updated: 09/19/2024 11:19
Changes: 11/04/2012 14:59 (90), 08/20/2017 22:09 (11), 09/19/2024 11:19 (16)
Complete: 🔍
Cache ID: 216:DB1:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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