fizz TLS <= v2023.01.30.00: Remote DoS via Cipher Change
CVE-2023-23759 Published on May 18, 2023
There is a vulnerability in the fizz library prior to v2023.01.30.00 where a CHECK failure can be triggered remotely. This behavior requires the client supported cipher advertisement changing between the original ClientHello and the second ClientHello, crashing the process (impact is limited to denial of service).
Vulnerability Analysis
CVE-2023-23759 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an assertion failure Vulnerability?
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
CVE-2023-23759 has been classified to as an assertion failure vulnerability or weakness.
Products Associated with CVE-2023-23759
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Affected Versions
Facebook fizz:- Version v0.0.0.0 and below v2023.01.30.00 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.