Heap Buffer Overflow in libwebp (Chrome <116.0.5845.187 / libwebp 1.3.2)
CVE-2023-4863 Published on September 12, 2023
Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)
Known Exploited Vulnerability
This Google Chromium Heap-Based Buffer Overflow Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Google Chromium contains a heap-based buffer overflow vulnerability in WebP that allows a remote attacker to perform an out-of-bounds memory write via a crafted HTML page.
The following remediation steps are recommended / required by October 4, 2023: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2023-4863 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2023-4863 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2023-4863
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Affected Versions
Google Chrome:- Version 116.0.5845.187 and below 116.0.5845.187 is affected.
- Version 1.3.2 and below 1.3.2 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.