CVE intelligence and bounded remediation

CVE-2024-21778 — Realtek Rtl819X Jungle Software Development Kit security vulnerability

High CVSS 7.2

A heap-based buffer overflow vulnerability exists in the configuration file mib_init_value_array functionality of Realtek rtl819x Jungle SDK v3.4.11. A specially crafted .dat file can lead to arbitrary code execution. An attacker can upload a malicious file to trigger this vulnerability.

Severity
High
CVSS
7.2 (3.1)
Published
2024-07-08
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-122, CWE-787

Affected products

  • realtek / rtl819x_jungle_software_development_kit / 3.4.11
  • level1 / wbr-6013_firmware / rer4_a_v3411b_2t2r_lev_09_170623

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

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Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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