{"id":"AZL-43870","summary":"CVE-2023-6992 affecting package clucene 2.3.3.4-38","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":"2026-04-21T04:31:11.649945Z","published":"2024-01-04T12:15:23Z","upstream":["CVE-2023-6992"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6992"}],"affected":[{"package":{"name":"clucene","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/clucene"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.3.3.4-38"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-43870.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"}]}