CVE-2023-6992 – Memory corruption issues is Cloudflare zlib implementation

https://notcve.org/view.php?id=CVE-2023-6992

Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow. A local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software. Patches: The issue has been patched in commit 8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected. Se descubrió que la versión Cloudflare de la librería zlib era vulnerable a problemas de corrupción de memoria que afectan la implementación del algoritmo de deflación (deflate.c). Los problemas se debieron a una validación de entrada incorrecta y a un desbordamiento de búfer de almacenamiento dinámico. • https://github.com/cloudflare/zlib https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh • CWE-20: Improper Input Validation CWE-122: Heap-based Buffer Overflow CWE-126: Buffer Over-read CWE-787: Out-of-bounds Write •