CVE-2020-28196

Published: 06 November 2020

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.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
krb5
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo)
Released (1.17-10ubuntu1)
Ubuntu 20.10 (Groovy Gorilla)
Released (1.17-10ubuntu0.1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1.17-6ubuntu4.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1.16-2ubuntu0.2)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (1.13.2+dfsg-5ubuntu2.2)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (1.12+dfsg-2ubuntu5.4+esm2)
Ubuntu 12.04 ESM (Precise Pangolin) Not vulnerable

Patches:
Upstream: https://github.com/krb5/krb5/commit/57415dda6cf04e73ffc3723be518eddfae599bfd