{"id":"AZL-39828","summary":"CVE-2023-42821 affecting package cri-o for versions less than 1.21.7-2","details":"The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee`, which corresponds with commit `14b16010c2ee7ff33a940a541d993bd043a88940`, parsing malformed markdown input with parser that uses parser.Mmark extension could result in out-of-bounds read vulnerability. To exploit the vulnerability, parser needs to have `parser.Mmark` extension set. The panic occurs inside the `citation.go` file on the line 69 when the parser tries to access the element past its length. This can result in a denial of service. Commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion `0.0.0-20230922105210-14b16010c2ee` contains a patch for this issue.","modified":"2026-04-01T05:13:30.586104Z","published":"2023-09-22T17:15:14Z","upstream":["CVE-2023-42821"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-42821"}],"affected":[{"package":{"name":"cri-o","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/cri-o"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.7-2"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-39828.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}