KDE Konqueror 4.7.3 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in KDE Konqueror 4.7.3 and classified as problematic. The impacted element is an unknown function. Performing a manipulation with the input window.open('javascript:alert(document.cookie)','test') results in null pointer dereference. This vulnerability is cataloged as CVE-2012-4514. Furthermore, there is an exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

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 summary by CVE is:

rendering/render_replaced.cpp in Konqueror in KDE before 4.9.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted web page, related to "trying to reuse a frame with a null part."

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), Exploit-DB (22406), Tenable (62875), SecurityFocus (BID 55879†) and OSVDB (86827†). Further details are available at seclists.org. The entries VDB-6847, VDB-6848, VDB-6851 and VDB-52161 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62875
Nessus Name: Fedora 18 : kdelibs-4.9.2-11.fc18 (2012-17234)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

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

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
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Patch: Revision 65464349

Timelineinfo

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 🔍
09/21/2024 +4328 days 🔍

Sourcesinfo

Vendor: kde.org

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

CVE: CVE-2012-4514 (🔍)
GCVE (CVE): GCVE-0-2012-4514
GCVE (VulDB): GCVE-100-6849
X-Force: 79287 - KDE Konqueror unspecified denial of service, Medium Risk
SecurityFocus: 55879 - KDE Konqueror Multiple Security Vulnerabilities
Secunia: 51097 - KDE kdelibs Multiple Vulnerabilities, Highly Critical
OSVDB: 86827
Vulnerability Center: 37248 - KDE <4.9.3 Konqueror 'render_replaced.cpp\x27 Function Allows Remote DoS via a Crafted Web Page, Medium

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

Entryinfo

Created: 11/04/2012 15:05
Updated: 09/21/2024 10:39
Changes: 11/04/2012 15:05 (70), 04/21/2017 11:34 (38), 04/18/2021 17:21 (3), 09/21/2024 10:39 (14)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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