CVSS 3.1 Score 7.8 of 10 (high)


Published Jan 8, 2024
Updated: Jan 11, 2024
CWE ID 119


CVE-2023-35956 is a vulnerability that affects GTKWave 3.3.115, specifically the fstReaderIterBlocks2 VCDATA parsing functionality. The vulnerability allows for multiple heap-based buffer overflow vulnerabilities, which can lead to arbitrary code execution when a specially-crafted .fst file is opened by a victim. The decompression function fastlz_decompress is the specific concern in this vulnerability. The base severity of this vulnerability is rated as HIGH, with a base score of 7.8 according to the CVSS:3.1 scoring system. The impact includes high integrity and confidentiality impacts, with an availability impact also being high.

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