#VU67777 NULL pointer dereference in Inetutils - GNU network utilities - CVE-2022-39028
Published: September 30, 2022 / Updated: October 26, 2022
Vulnerability identifier: #VU67777
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-39028
CWE-ID: CWE-476
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Inetutils - GNU network utilities
Inetutils - GNU network utilities
Software vendor:
GNU
GNU
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in telnetd daemon. A remote attacker can trigger NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8 and crash telnetd.
Remediation
Install update from vendor's website.
External links
- https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html
- https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289
- https://pierrekim.github.io/blog/2022-08-24-2-byte-dos-freebsd-netbsd-telnetd-netkit-telnetd-inetutils-telnetd-kerberos-telnetd.html