{"id":"ALPINE-CVE-2020-28196","details":"MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.","modified":"2026-03-09T01:17:31.489326Z","published":"2020-11-06T08:15:13.860Z","upstream":["CVE-2020-28196"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2020-28196"}],"affected":[{"package":{"name":"krb5","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.2-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1","1.13.1-r0","1.13.1-r1","1.13.2-r0","1.13.2-r1","1.13.2-r2","1.14-r0","1.14-r1","1.14-r2","1.14.3-r0","1.14.3-r1","1.14.3-r2","1.15.1-r0","1.15.2-r0","1.15.2-r1","1.15.2-r2","1.15.3-r0","1.15.3-r1","1.15.4-r0","1.15.5-r0","1.17-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-28196.json"}},{"package":{"name":"krb5","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.2-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1","1.13.1-r0","1.13.1-r1","1.13.2-r0","1.13.2-r1","1.13.2-r2","1.14-r0","1.14-r1","1.14-r2","1.14.3-r0","1.14.3-r1","1.14.3-r2","1.15.1-r0","1.15.2-r0","1.15.2-r1","1.15.2-r2","1.15.3-r0","1.15.3-r1","1.15.4-r0","1.15.5-r0","1.17-r0","1.17.1-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-28196.json"}},{"package":{"name":"krb5","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.3-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1","1.13.1-r0","1.13.1-r1","1.13.2-r0","1.13.2-r1","1.13.2-r2","1.14-r0","1.14-r1","1.14-r2","1.14.3-r0","1.14.3-r1","1.14.3-r2","1.15.1-r0","1.15.2-r0","1.15.2-r1","1.15.2-r2","1.15.3-r0","1.15.3-r1","1.15.4-r0","1.15.5-r0","1.17-r0","1.17.1-r0","1.18-r0","1.18.1-r0","1.18.2-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-28196.json"}},{"package":{"name":"krb5","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.3-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1","1.13.1-r0","1.13.1-r1","1.13.2-r0","1.13.2-r1","1.13.2-r2","1.14-r0","1.14-r1","1.14-r2","1.14.3-r0","1.14.3-r1","1.14.3-r2","1.15.1-r0","1.15.2-r0","1.15.2-r1","1.15.2-r2","1.15.3-r0","1.15.3-r1","1.15.4-r0","1.15.5-r0","1.17-r0","1.17.1-r0","1.18-r0","1.18.1-r0","1.18.2-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-28196.json"}},{"package":{"name":"krb5","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.3-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1","1.13.1-r0","1.13.1-r1","1.13.2-r0","1.13.2-r1","1.13.2-r2","1.14-r0","1.14-r1","1.14-r2","1.14.3-r0","1.14.3-r1","1.14.3-r2","1.15.1-r0","1.15.2-r0","1.15.2-r1","1.15.2-r2","1.15.3-r0","1.15.3-r1","1.15.4-r0","1.15.5-r0","1.17-r0","1.17.1-r0","1.18-r0","1.18.1-r0","1.18.2-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-28196.json"}},{"package":{"name":"krb5","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.3-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1","1.13.1-r0","1.13.1-r1","1.13.2-r0","1.13.2-r1","1.13.2-r2","1.14-r0","1.14-r1","1.14-r2","1.14.3-r0","1.14.3-r1","1.14.3-r2","1.15.1-r0","1.15.2-r0","1.15.2-r1","1.15.2-r2","1.15.3-r0","1.15.3-r1","1.15.4-r0","1.15.5-r0","1.17-r0","1.17.1-r0","1.18-r0","1.18.1-r0","1.18.2-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-28196.json"}},{"package":{"name":"krb5","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/krb5?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.3-r0"}]}],"versions":["1.11-r0","1.11-r1","1.11-r2","1.11.2-r0","1.11.2-r1","1.11.2-r2","1.11.3-r0","1.11.4-r0","1.12.1-r0","1.12.2-r0","1.13-r0","1.13-r1"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