CVE-2023-6992

Summary

CVE-2023-6992 is a vulnerability found in the Cloudflare version of the zlib library. It is susceptible to memory corruption issues that affect the deflation algorithm implementation. The vulnerability arises from improper input validation and heap-based buffer overflow. If exploited by a local attacker through a crafted malicious file during compression, it could lead to denial of service of the software. The issue has been patched in commit 8352d10 in the Cloudflare zlib repository, and the upstream repository is not affected. The vulnerability has a base severity rating of MEDIUM with an exploitability score of 1.8, and it poses a high availability impact but does not impact confidentiality or integrity.

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