| Name | CVE-2020-28196 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2437-1, DSA-4795-1, ELA-308-1 |
| Debian Bugs | 973880 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| krb5 (PTS) | jessie, jessie (lts) | 1.12.1+dfsg-19+deb8u9 | fixed |
| stretch (security) | 1.15-1+deb9u3 | fixed | |
| stretch (lts), stretch | 1.15-1+deb9u6 | fixed | |
| buster, buster (lts) | 1.17-3+deb10u7 | fixed | |
| buster (security) | 1.17-3+deb10u6 | fixed | |
| bullseye (security), bullseye | 1.18.3-6+deb11u5 | fixed | |
| bookworm (security), bookworm | 1.20.1-2+deb12u2 | fixed | |
| sid, trixie | 1.21.3-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| krb5 | source | experimental | 1.18.2-1 | |||
| krb5 | source | jessie | 1.12.1+dfsg-19+deb8u6 | ELA-308-1 | ||
| krb5 | source | stretch | 1.15-1+deb9u2 | DLA-2437-1 | ||
| krb5 | source | buster | 1.17-3+deb10u1 | DSA-4795-1 | ||
| krb5 | source | (unstable) | 1.18.3-1 | 973880 |
https://github.com/krb5/krb5/commit/57415dda6cf04e73ffc3723be518eddfae599bfd