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.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "libk5crypto3": "1.12+dfsg-2ubuntu5.4+esm2", "libkdb5-7": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-otp-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-pkinit-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-kdc": "1.12+dfsg-2ubuntu5.4+esm2", "libkrb5-dbg": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-admin-server": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-user-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-otp": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-user": "1.12+dfsg-2ubuntu5.4+esm2", "libkrb5-3-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libgssrpc4": "1.12+dfsg-2ubuntu5.4+esm2", "libgssapi-krb5-2-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libkrad0": "1.12+dfsg-2ubuntu5.4+esm2", "libkrb5-3": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-gss-samples-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libkrad-dev": "1.12+dfsg-2ubuntu5.4+esm2", "libkrb5support0-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libkdb5-7-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-multidev": "1.12+dfsg-2ubuntu5.4+esm2", "libkadm5srv-mit9": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-gss-samples": "1.12+dfsg-2ubuntu5.4+esm2", "libkadm5srv-mit9-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libkrad0-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-kdc-ldap-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libk5crypto3-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libkadm5clnt-mit9": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-kdc-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-locales": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-doc": "1.12+dfsg-2ubuntu5.4+esm2", "libkadm5clnt-mit9-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-pkinit": "1.12+dfsg-2ubuntu5.4+esm2", "libkrb5-dev": "1.12+dfsg-2ubuntu5.4+esm2", "libkrb5support0": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-admin-server-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libgssapi-krb5-2": "1.12+dfsg-2ubuntu5.4+esm2", "krb5-kdc-ldap": "1.12+dfsg-2ubuntu5.4+esm2", "libgssrpc4-dbgsym": "1.12+dfsg-2ubuntu5.4+esm2", "libkadm5srv-mit8": "1.12+dfsg-2ubuntu5.4+esm2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libk5crypto3": "1.13.2+dfsg-5ubuntu2.2", "krb5-otp-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-pkinit-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libkrb5-dev-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-kdc": "1.13.2+dfsg-5ubuntu2.2", "libkrb5-dbg": "1.13.2+dfsg-5ubuntu2.2", "krb5-admin-server": "1.13.2+dfsg-5ubuntu2.2", "krb5-user-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-otp": "1.13.2+dfsg-5ubuntu2.2", "libkdb5-8": "1.13.2+dfsg-5ubuntu2.2", "libkrb5-3-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-user": "1.13.2+dfsg-5ubuntu2.2", "libgssrpc4": "1.13.2+dfsg-5ubuntu2.2", "libgssapi-krb5-2-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libkdb5-8-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libkrad0": "1.13.2+dfsg-5ubuntu2.2", "libkrb5-3": "1.13.2+dfsg-5ubuntu2.2", "krb5-gss-samples-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libkrad-dev": "1.13.2+dfsg-5ubuntu2.2", "libkrb5support0-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-multidev": "1.13.2+dfsg-5ubuntu2.2", "libkadm5srv-mit9": "1.13.2+dfsg-5ubuntu2.2", "krb5-gss-samples": "1.13.2+dfsg-5ubuntu2.2", "libkadm5srv-mit9-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libkrad0-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-kdc-ldap-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-multidev-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libk5crypto3-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libkadm5clnt-mit9": "1.13.2+dfsg-5ubuntu2.2", "krb5-k5tls-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-locales": "1.13.2+dfsg-5ubuntu2.2", "libkrad-dev-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-doc": "1.13.2+dfsg-5ubuntu2.2", "libkadm5clnt-mit9-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-pkinit": "1.13.2+dfsg-5ubuntu2.2", "libkrb5-dev": "1.13.2+dfsg-5ubuntu2.2", "libkrb5support0": "1.13.2+dfsg-5ubuntu2.2", "krb5-admin-server-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "libgssapi-krb5-2": "1.13.2+dfsg-5ubuntu2.2", "krb5-k5tls": "1.13.2+dfsg-5ubuntu2.2", "krb5-kdc-dbgsym": "1.13.2+dfsg-5ubuntu2.2", "krb5-kdc-ldap": "1.13.2+dfsg-5ubuntu2.2", "libgssrpc4-dbgsym": "1.13.2+dfsg-5ubuntu2.2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libk5crypto3": "1.16-2ubuntu0.2", "krb5-otp-dbgsym": "1.16-2ubuntu0.2", "krb5-kpropd": "1.16-2ubuntu0.2", "libkadm5srv-mit11": "1.16-2ubuntu0.2", "krb5-pkinit-dbgsym": "1.16-2ubuntu0.2", "krb5-kdc": "1.16-2ubuntu0.2", "libkrb5-dbg": "1.16-2ubuntu0.2", "krb5-admin-server": "1.16-2ubuntu0.2", "krb5-user-dbgsym": "1.16-2ubuntu0.2", "krb5-otp": "1.16-2ubuntu0.2", "krb5-user": "1.16-2ubuntu0.2", "libgssrpc4": "1.16-2ubuntu0.2", "libkrad0": "1.16-2ubuntu0.2", "libkrb5-3": "1.16-2ubuntu0.2", "krb5-gss-samples-dbgsym": "1.16-2ubuntu0.2", "libkrad-dev": "1.16-2ubuntu0.2", "libkadm5clnt-mit11": "1.16-2ubuntu0.2", "krb5-multidev": "1.16-2ubuntu0.2", "krb5-gss-samples": "1.16-2ubuntu0.2", "krb5-kpropd-dbgsym": "1.16-2ubuntu0.2", "krb5-kdc-ldap-dbgsym": "1.16-2ubuntu0.2", "krb5-k5tls-dbgsym": "1.16-2ubuntu0.2", "krb5-locales": "1.16-2ubuntu0.2", "krb5-kdc-dbgsym": "1.16-2ubuntu0.2", "krb5-doc": "1.16-2ubuntu0.2", "libkrb5support0": "1.16-2ubuntu0.2", "krb5-pkinit": "1.16-2ubuntu0.2", "libkrb5-dev": "1.16-2ubuntu0.2", "krb5-admin-server-dbgsym": "1.16-2ubuntu0.2", "libgssapi-krb5-2": "1.16-2ubuntu0.2", "krb5-k5tls": "1.16-2ubuntu0.2", "krb5-kdc-ldap": "1.16-2ubuntu0.2", "libkdb5-9": "1.16-2ubuntu0.2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libk5crypto3": "1.17-6ubuntu4.1", "krb5-otp-dbgsym": "1.17-6ubuntu4.1", "krb5-kpropd": "1.17-6ubuntu4.1", "libkadm5srv-mit11": "1.17-6ubuntu4.1", "krb5-pkinit-dbgsym": "1.17-6ubuntu4.1", "krb5-kdc": "1.17-6ubuntu4.1", "libkrb5-dbg": "1.17-6ubuntu4.1", "krb5-admin-server": "1.17-6ubuntu4.1", "krb5-user-dbgsym": "1.17-6ubuntu4.1", "krb5-otp": "1.17-6ubuntu4.1", "krb5-user": "1.17-6ubuntu4.1", "libgssrpc4": "1.17-6ubuntu4.1", "libkrad0": "1.17-6ubuntu4.1", "libkrb5-3": "1.17-6ubuntu4.1", "krb5-gss-samples-dbgsym": "1.17-6ubuntu4.1", "libkrad-dev": "1.17-6ubuntu4.1", "libkadm5clnt-mit11": "1.17-6ubuntu4.1", "krb5-multidev": "1.17-6ubuntu4.1", "krb5-gss-samples": "1.17-6ubuntu4.1", "krb5-kpropd-dbgsym": "1.17-6ubuntu4.1", "krb5-kdc-ldap-dbgsym": "1.17-6ubuntu4.1", "krb5-k5tls-dbgsym": "1.17-6ubuntu4.1", "krb5-locales": "1.17-6ubuntu4.1", "krb5-kdc-dbgsym": "1.17-6ubuntu4.1", "krb5-doc": "1.17-6ubuntu4.1", "libkrb5support0": "1.17-6ubuntu4.1", "krb5-pkinit": "1.17-6ubuntu4.1", "libkrb5-dev": "1.17-6ubuntu4.1", "krb5-admin-server-dbgsym": "1.17-6ubuntu4.1", "libgssapi-krb5-2": "1.17-6ubuntu4.1", "krb5-k5tls": "1.17-6ubuntu4.1", "krb5-kdc-ldap": "1.17-6ubuntu4.1", "libkdb5-9": "1.17-6ubuntu4.1" } ] }