{"id":"ALPINE-CVE-2024-28820","details":"Buffer overflow in the extract_openvpn_cr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow.","modified":"2026-09-15T08:17:48.454263454Z","published":"2024-06-27T16:15:10.950Z","upstream":["CVE-2024-28820"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2024-28820"}],"affected":[{"package":{"name":"openvpn-auth-ldap","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/openvpn-auth-ldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-r7"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2024-28820.json"}},{"package":{"name":"openvpn-auth-ldap","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/openvpn-auth-ldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-r7"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2024-28820.json"}},{"package":{"name":"openvpn-auth-ldap","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/openvpn-auth-ldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-r7"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2024-28820.json"}},{"package":{"name":"openvpn-auth-ldap","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/openvpn-auth-ldap?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-r7"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2024-28820.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"}]}