Zoom Client DoS via Buffer Overflow
CVE-2023-39204 Published on November 14, 2023
Buffer overflow in some Zoom clients may allow an unauthenticated user to conduct a denial of service via network access.
Vulnerability Analysis
CVE-2023-39204 is exploitable with network access, requires 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 small impact on availability.
Weakness Type
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2023-39204 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2023-39204
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Affected Versions
Zoom Video Communications, Inc. Zoom Clients Version see references is affected by CVE-2023-39204Exploit 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.