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CVE-2022-39028

Published: Aug 30, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-476
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.6%
Top 27.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

inetutilsgnuOSS Libraries
kerberos 5mit
On-prem
Operating Systems
debian linuxdebian
On-premOS
Operating Systems / linux-distro
netkit-telnetnetkit-telnet project
On-prem
Networking Infrastructure / load-balancer-proxy
netkit-telnetСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
gnuoss-projectUSOSS Librariesaka g. nu
mitoss-projectUSOperating Systemsaka mit krb5, mit kerberos
debianoss-projectGBOperating Systemsaka debian gnu/linux
netkit-telnet projectoss-projectNetworking Infrastructureaka netkit-telnet
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
and 4 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289
git.hadrons.org
https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html
lists.debian.org
https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html
lists.gnu.org
and 4 more references View all →

Timeline

Published
Aug 30, 2022
Last Updated
Nov 21, 2024

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