CVE-2021-42373 Null dereference in busybox
A NULL pointer dereference in BusyBox's man applet allows attackers to cause a denial of service by supplying a section name without a page argument.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-42373?
CVE-2021-42373 is a medium-severity vulnerability in Fedoraproject Fedora, published on 15 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given
Weakness: CWE-476
Which versions are affected by CVE-2021-42373?
It affects 12 products.
Products include Busybox Busybox, Fedoraproject Fedora, Netapp Cloud Backup, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410s Firmware and 6 more.
How do I fix CVE-2021-42373?
Apply the vendor's patch.
Is CVE-2021-42373 being exploited?
There is no known exploitation of CVE-2021-42373 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2021-42373, GHSA-6w3h-h7gw-72qf.