CVEvulnerability

CVE-2022-39028

7.5 HIGH Published 2022-08-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-08-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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.

Affected configurations

• gnu inetutils (<= 2.3) • mit kerberos 5 (<= 1.0.3) • debian debian linux 10.0 • netkit-telnet project netkit-telnet (<= 0.17)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References