{"id":"ALPINE-CVE-2021-29922","details":"library/std/src/net/parser.rs in Rust before 1.53.0 does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation.","modified":"2025-12-03T22:48:34.919996Z","published":"2021-08-07T17:15:06.907Z","upstream":["CVE-2021-29922"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-29922"}],"affected":[{"package":{"name":"rust","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/rust?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.52.1-r1"}]}],"versions":["1.10.0-r0","1.10.0-r1","1.16.0-r0","1.16.0-r1","1.16.0-r2","1.16.0-r3","1.16.0-r4","1.16.0-r5","1.17.0-r0","1.17.0-r1","1.17.0-r2","1.17.0-r3","1.18.0-r1","1.19.0-r0","1.20.0-r0","1.21.0-r0","1.21.0-r1","1.22.1-r0","1.23.0-r0","1.23.0-r1","1.24.0-r0","1.24.1-r0","1.25.0-r0","1.26.0-r0","1.26.0-r1","1.26.2-r0","1.27.0-r0","1.27.2-r0","1.28.0-r0","1.29.0-r0","1.30.0-r0","1.30.0-r1","1.31.1-r1","1.31.1-r2","1.32.0-r0","1.33.0-r0","1.34.2-r0","1.34.2-r1","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.38.0-r0","1.38.0-r1","1.38.0-r2","1.39.0-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.0-r1","1.41.1-r0","1.42.0-r0","1.42.0-r1","1.42.0-r2","1.43.0-r0","1.43.1-r0","1.43.1-r1","1.44.0-r0","1.44.1-r0","1.45.1-r0","1.45.2-r0","1.46.0-r0","1.46.0-r1","1.46.0-r2","1.47.0-r0","1.47.0-r1","1.47.0-r2","1.48.0-r0","1.49.0-r0","1.50.0-r0","1.50.0-r1","1.51.0-r0","1.51.0-r1","1.51.0-r2","1.52.0-r0","1.52.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-29922.json"}},{"package":{"name":"rust","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/rust?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.52.1-r1"}]}],"versions":["1.10.0-r0","1.10.0-r1","1.16.0-r0","1.16.0-r1","1.16.0-r2","1.16.0-r3","1.16.0-r4","1.16.0-r5","1.17.0-r0","1.17.0-r1","1.17.0-r2","1.17.0-r3","1.18.0-r1","1.19.0-r0","1.20.0-r0","1.21.0-r0","1.21.0-r1","1.22.1-r0","1.23.0-r0","1.23.0-r1","1.24.0-r0","1.24.1-r0","1.25.0-r0","1.26.0-r0","1.26.0-r1","1.26.2-r0","1.27.0-r0","1.27.2-r0","1.28.0-r0","1.29.0-r0","1.30.0-r0","1.30.0-r1","1.31.1-r1","1.31.1-r2","1.32.0-r0","1.33.0-r0","1.34.2-r0","1.34.2-r1","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.38.0-r0","1.38.0-r1","1.38.0-r2","1.39.0-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.0-r1","1.41.1-r0","1.42.0-r0","1.42.0-r1","1.42.0-r2","1.43.0-r0","1.43.1-r0","1.43.1-r1","1.44.0-r0","1.44.1-r0","1.45.1-r0","1.45.2-r0","1.46.0-r0","1.46.0-r1","1.46.0-r2","1.47.0-r0","1.47.0-r1","1.47.0-r2","1.48.0-r0","1.49.0-r0","1.50.0-r0","1.50.0-r1","1.51.0-r0","1.51.0-r1","1.51.0-r2","1.52.0-r0","1.52.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-29922.json"}},{"package":{"name":"rust","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/rust?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.52.1-r1"}]}],"versions":["1.10.0-r0","1.10.0-r1","1.16.0-r0","1.16.0-r1","1.16.0-r2","1.16.0-r3","1.16.0-r4","1.16.0-r5","1.17.0-r0","1.17.0-r1","1.17.0-r2","1.17.0-r3","1.18.0-r1","1.19.0-r0","1.20.0-r0","1.21.0-r0","1.21.0-r1","1.22.1-r0","1.23.0-r0","1.23.0-r1","1.24.0-r0","1.24.1-r0","1.25.0-r0","1.26.0-r0","1.26.0-r1","1.26.2-r0","1.27.0-r0","1.27.2-r0","1.28.0-r0","1.29.0-r0","1.30.0-r0","1.30.0-r1","1.31.1-r1","1.31.1-r2","1.32.0-r0","1.33.0-r0","1.34.2-r0","1.34.2-r1","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.38.0-r0","1.38.0-r1","1.38.0-r2","1.39.0-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.0-r1","1.41.1-r0","1.42.0-r0","1.42.0-r1","1.42.0-r2","1.43.0-r0","1.43.1-r0","1.43.1-r1","1.44.0-r0","1.44.1-r0","1.45.1-r0","1.45.2-r0","1.46.0-r0","1.46.0-r1","1.46.0-r2","1.47.0-r0","1.47.0-r1","1.47.0-r2","1.48.0-r0","1.49.0-r0","1.50.0-r0","1.50.0-r1","1.51.0-r0","1.51.0-r1","1.51.0-r2","1.52.0-r0","1.52.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-29922.json"}},{"package":{"name":"rust","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/rust?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.52.1-r1"}]}],"versions":["1.10.0-r0","1.10.0-r1","1.16.0-r0","1.16.0-r1","1.16.0-r2","1.16.0-r3","1.16.0-r4","1.16.0-r5","1.17.0-r0","1.17.0-r1","1.17.0-r2","1.17.0-r3","1.18.0-r1","1.19.0-r0","1.20.0-r0","1.21.0-r0","1.21.0-r1","1.22.1-r0","1.23.0-r0","1.23.0-r1","1.24.0-r0","1.24.1-r0","1.25.0-r0","1.26.0-r0","1.26.0-r1","1.26.2-r0","1.27.0-r0","1.27.2-r0","1.28.0-r0","1.29.0-r0","1.30.0-r0","1.30.0-r1","1.31.1-r1","1.31.1-r2","1.32.0-r0","1.33.0-r0","1.34.2-r0","1.34.2-r1","1.35.0-r0","1.36.0-r0","1.37.0-r0","1.38.0-r0","1.38.0-r1","1.38.0-r2","1.39.0-r0","1.40.0-r0","1.40.0-r1","1.41.0-r0","1.41.0-r1","1.41.1-r0","1.42.0-r0","1.42.0-r1","1.42.0-r2","1.43.0-r0","1.43.1-r0","1.43.1-r1","1.44.0-r0","1.44.1-r0","1.45.1-r0","1.45.2-r0","1.46.0-r0","1.46.0-r1","1.46.0-r2","1.47.0-r0","1.47.0-r1","1.47.0-r2","1.48.0-r0","1.49.0-r0","1.50.0-r0","1.50.0-r1","1.51.0-r0","1.51.0-r1","1.51.0-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