| Name | CVE-2022-39028 |
| Description | telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8. |
| 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-3205-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| inetutils (PTS) | bullseye | 2:2.0-1+deb11u2 | fixed |
| bookworm | 2:2.4-2+deb12u1 | fixed | |
| sid, trixie | 2:2.5-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| inetutils | source | buster | 2:1.9.4-7+deb10u2 | DLA-3205-1 | ||
| inetutils | source | bullseye | 2:2.0-1+deb11u1 | |||
| inetutils | source | (unstable) | 2:2.3-5 |
https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html
https://pierrekim.github.io/blog/2022-08-24-2-byte-dos-freebsd-netbsd-telnetd-netkit-telnetd-inetutils-telnetd-kerberos-telnetd.html