CVE-2023-4577

CVSS 3.1 Score 6.5 of 10 (medium)

Details

Published Sep 11, 2023
Updated: Sep 13, 2023

Summary

CVE-2023-4577 is a cyber vulnerability that affects Firefox versions prior to 117, Firefox ESR versions prior to 115.2, and Thunderbird versions prior to 115.2. The vulnerability occurs when the "UpdateRegExpStatics" function tries to access "initialStringHeap", which may have already been garbage collected, leading to a potential exploitable crash. The severity of this vulnerability is rated as MEDIUM with a base score of 6.5 according to NIST. The exploitability score is 2.8, and no privileges are required for exploitation. User interaction is required, and the attack vector is through the network. The impact on integrity and confidentiality is none, but there is a high availability impact.

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