Vulnerabilities > CVE-2022-39028 - NULL Pointer Dereference vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

gnu

mit

debian

netkit-telnet-project

CWE-476

NVD

Published: 2022-08-30

Updated: 2023-09-27

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Gnu GNU Inetutils - GNU Inetutils 1.3.2 GNU Inetutils 1.3A GNU Inetutils 1.3B GNU Inetutils 1.4.0 GNU Inetutils 1.4.1 GNU Inetutils 1.4.2 GNU Inetutils 1.5 GNU Inetutils 1.6 GNU Inetutils 1.7 GNU Inetutils 1.8 GNU Inetutils 1.9 GNU Inetutils 1.9.1 GNU Inetutils 1.9.2 GNU Inetutils 1.9.3 GNU Inetutils 1.9.4 GNU Inetutils 2.2 GNU Inetutils 2.3	18
Application	Mit MIT Kerberos 5 - MIT Kerberos 5 1.0 MIT Kerberos 5 1.0.3	7
Application	Netkit-Telnet_Project Netkit Telnet Project Netkit Telnet *	1
OS	Debian Debian Debian Linux 10.0	1

Common Weakness Enumeration (CWE)

CWE-476 - NULL Pointer Dereference

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References