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.

Weakness classification

• CWE-476: NULL Pointer Dereference

Primary references

• cve@mitre.org — Mailing List, Patch, Vendor Advisory
• cve@mitre.org — Mailing List, Third Party Advisory
• cve@mitre.org — Mailing List, Vendor Advisory
• cve@mitre.org — Exploit, Patch, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Third Party Advisory