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An integer overflow vulnerability exists in the fstReaderIterBlocks2 time_table tsec_nitems functionality of GTKWave 3.3.115. A specially crafted .fst file can lead to memory corruption. A victim would need to open a malicious file to trigger this vulnerability.

CVE-2023-35128 is a high-severity integer overflow vulnerability identified in GTKWave version 3.3.115, specifically within the fstReaderIterBlocks2 function related to the time_table tsec_nitems processing. GTKWave is a widely used open-source waveform viewer for digital design verification, commonly employed by hardware engineers to analyze simulation output files. The vulnerability arises when GTKWave processes a specially crafted .fst (Fast Signal Trace) file. Due to improper handling of integer values, an overflow or wraparound can occur, leading to memory corruption. This memory corruption could potentially be exploited to execute arbitrary code, cause a denial of service, or crash the application. Exploitation requires a victim to open a malicious .fst file, which means user interaction is necessary. The CVSS v3.1 base score is 7.0, indicating a high severity level, with the vector AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H. This means the attack vector is local (the attacker must have local access), the attack complexity is high, no privileges are required, but user interaction is necessary. The scope is unchanged, and the impact on confidentiality, integrity, and availability is high. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound), a common weakness that can lead to serious memory safety issues if not properly mitigated.

Detailed information about CVE-2023-35128: CWE-190: Integer Overflow or Wraparound in GTKWave GTKWave affecting GTKWave GTKWave. Get real-time updates, technica

CVE-2023-35128: CWE-190: Integer Overflow or Wraparound in GTKWave GTKWave - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-35128: CWE-190: Integer Overflow or Wraparound in GTKWave GTKWave

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