CVE intelligence and bounded remediation

CVE-2012-4512 — Kde Kde security vulnerability

High CVSS 8.8

The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via a crafted font face source, related to "type confusion."

Severity
High
CVSS
8.8 (3.1)
Published
2020-02-08
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-843

Affected products

  • kde / kde / 4.7.3
  • redhat / enterprise_linux / 6.0
  • redhat / enterprise_linux_desktop / 6.0
  • redhat / enterprise_linux_server_eus / 6.3
  • redhat / enterprise_linux_workstation / 6.0

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.