CVE-2023-6992

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20 CWE-122 CWE-126 CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Jan 4, 2024
Last modified: Jun 17, 2026
NVD status: Modified

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