{"id":"CVE-2023-6992","details":"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.\nA local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software.\nPatches: The issue has been patched in commit  8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected.\n","modified":"2026-03-13T22:01:12.414539Z","published":"2024-01-04T12:15:23.690Z","related":["GHSA-vww9-j87r-4cqh"],"references":[{"type":"FIX","url":"https://github.com/cloudflare/zlib/security/advisories/GHSA-vww9-j87r-4cqh"},{"type":"PACKAGE","url":"https://github.com/cloudflare/zlib"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2023-11-16"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-6992.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}