KDE Konqueror 4.7.3 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as critical has been found in KDE Konqueror 4.7.3 (Web Browser). This affects an unknown part. The manipulation with the input value window.open('javascript:alert(document.cookie)','test') leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The weakness was shared 10/10/2012 by Tim Brown with Nth Dimension as NDSA20121010 as confirmed advisory (Website). The advisory is shared at nth-dimension.org.uk. The vendor cooperated in the coordination of the public release. This vulnerability is uniquely identified as CVE-2012-4514 since 08/21/2012. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Tim Brown in HTML/Javascript and been published immediately after the advisory. The exploit is shared for download at nth-dimension.org.uk. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 237 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 62875 (Fedora 18 : kdelibs-4.9.2-11.fc18 (2012-17234)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks.

Applying the patch Revision 65464349 is able to eliminate this problem. The bugfix is ready for download at projects.kde.org. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (79287), Tenable (62875) and Exploit-DB (22406). Further details are available at seclists.org. The entries 6847, 6848, 6851 and 52161 are related to this item.







CPE 2.3info

CPE 2.2info


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

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

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

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Nessus ID: 62875
Nessus Name: Fedora 18 : kdelibs-4.9.2-11.fc18 (2012-17234)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 864868
OpenVAS Name: Fedora Update for kdelibs FEDORA-2012-17385
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Threat Intelligenceinfo

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Recommended: Patch
Status: 🔍

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Patch: Revision 65464349


02/16/2012 🔍
02/20/2012 +4 days 🔍
08/21/2012 +183 days 🔍
10/10/2012 +50 days 🔍
10/10/2012 +0 days 🔍
10/11/2012 +1 days 🔍
10/19/2012 +8 days 🔍
10/31/2012 +12 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 🔍
11/12/2012 +1 days 🔍
11/15/2012 +3 days 🔍
04/18/2021 +3076 days 🔍


Vendor: kde.org

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

CVE: CVE-2012-4514 (🔍)
X-Force: 79287 - KDE Konqueror unspecified denial of service, Medium Risk
Vulnerability Center: 37248 - KDE <4.9.3 Konqueror 'render_replaced.cpp\x27 Function Allows Remote DoS via a Crafted Web Page, Medium
SecurityFocus: 55879 - KDE Konqueror Multiple Security Vulnerabilities
Secunia: 51097 - KDE kdelibs Multiple Vulnerabilities, Highly Critical
OSVDB: 86827

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
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Created: 11/04/2012 03:05 PM
Updated: 04/18/2021 05:21 PM
Changes: 11/04/2012 03:05 PM (70), 04/21/2017 11:34 AM (38), 04/18/2021 05:21 PM (3)
Complete: 🔍


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