CVE-2022-39028 Null dereference in n/a
A NULL pointer dereference in telnetd allows remote attackers to cause a denial of service by crashing the service repeatedly.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-39028?
CVE-2022-39028 is a high-severity vulnerability in Debian Debian Linux, published on 30 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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: CWE-476
Which versions are affected by CVE-2022-39028?
It affects 4 products.
Linux distribution packages (40)
telnet SUSE:Enterprise Storage 6 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Enterprise Storage 7 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Module for Legacy 15 SP3 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Module for Legacy 15 SP4 | All versions | 1.2-150000.3.6.1 |
krb5-appl SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 1.0.3-3.9.1 |
telnet SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 1.2-167.10.1 |
krb5-appl SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 1.0.3-3.9.1 |
telnet SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 1.2-167.10.1 |
krb5-appl SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 1.0.3-3.9.1 |
telnet SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 1.2-167.10.1 |
krb5-appl SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.0.3-3.9.1 |
telnet SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.2-167.10.1 |
telnet SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Server 15 SP2-BCL | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Server 15-LTSS | All versions | 1.2-150000.3.6.1 |
krb5-appl SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 1.0.3-3.9.1 |
telnet SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 1.2-167.10.1 |
krb5-appl SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.0.3-3.9.1 |
telnet SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.2-167.10.1 |
telnet SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Manager Proxy 4.1 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Manager Retail Branch Server 4.1 | All versions | 1.2-150000.3.6.1 |
telnet SUSE:Manager Server 4.1 | All versions | 1.2-150000.3.6.1 |
krb5-appl SUSE:OpenStack Cloud 9 | All versions | 1.0.3-3.9.1 |
telnet SUSE:OpenStack Cloud 9 | All versions | 1.2-167.10.1 |
krb5-appl SUSE:OpenStack Cloud Crowbar 9 | All versions | 1.0.3-3.9.1 |
telnet SUSE:OpenStack Cloud Crowbar 9 | All versions | 1.2-167.10.1 |
telnet openSUSE:Leap 15.3 | All versions | 1.2-150000.3.6.1 |
Products include Debian Debian Linux, Gnu Inetutils, Mit Kerberos 5, Netkit-Telnet Project Netkit-Telnet.
How do I fix CVE-2022-39028?
Apply the vendor's patch.
Is CVE-2022-39028 being exploited?
There is no known exploitation of CVE-2022-39028 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2022-39028, GHSA-jq82-jqvw-64w3, MGASA-2022-0394, MGASA-2022-0460, OESA-2024-1354, OESA-2024-1359 and 9 more.