CVE-2023-45853
CriticalCVSS 9.8Exploitation Probability (EPSS)
High risk85th percentile - higher than 85% of all known CVEs
Summary
In zlib up to version 1.3, the MiniZip component has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field.
Risk Assessment
An attacker can remotely cause application crashes or potentially execute arbitrary code in the context of the process using the vulnerable library, posing a serious risk to system integrity and availability.
Recommendation
Update zlib to version 1.3.1 or later, and also update pyminizip to a version after 0.2.6 that does not contain the vulnerable MiniZip code.
Original NVD description (English source)
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.