CVE-2012-4513

Konqueror in KDE 4.7.3 - Heap-Based Buffer Over-Read via Large Canvas Dimensions

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2012-4513.

AI-analyzed exploit summary This advisory details multiple memory corruption vulnerabilities in Konqueror 4.7.3, including type confusion, out-of-bounds access, NULL pointer dereference, and use-after-free flaws. It provides technical analysis, PoC code snippets, and patch references for each vulnerability.

Description

khtml/imload/scaledimageplane.h in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via large canvas dimensions, which leads to an unexpected sign extension and a heap-based buffer over-read.

Exploits (1)

exploitdb WRITEUP
doslinux
https://www.exploit-db.com/exploits/22406

This advisory details multiple memory corruption vulnerabilities in Konqueror 4.7.3, including type confusion, out-of-bounds access, NULL pointer dereference, and use-after-free flaws. It provides technical analysis, PoC code snippets, and patch references for each vulnerability.

Classification
Writeup 100%
Attack Type
Dos | Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Konqueror 4.7.3
No auth needed
Prerequisites: Victim must visit a malicious webpage
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (10)

Core 10
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/51145
Vendor Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2012-1418.html
Vendor Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2012-1416.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1027709
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2012/10/11/11
Third Party Advisory mailing-list x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2012-11/0005.html
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2012/10/30/6
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/51097

Scores

EPSS 0.1260
EPSS Percentile 95.7%

Details

CWE
CWE-119
Status published
Products (1)
kde/kde 4.7.3
Published Nov 11, 2012
Tracked Since Feb 18, 2026