CVE-2021-46671 Information disclosure in n/a

Medium 5.3 Published 4 Feb 2022 Updated 4 Aug 2024

A remote attacker can read server-side /etc/group data due to an out-of-bounds read in the atftp TFTP server.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2021-46671?

CVE-2021-46671 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

options.c in atftp before 0.7.5 reads past the end of an array, and consequently discloses server-side /etc/group data to a remote client.

Weakness: CWE-125

Which versions are affected by CVE-2021-46671?

It affects 2 products.

Linux distribution packages (2)

`atftp` SUSE:Linux Enterprise Server 12 SP5	All versions	`0.7.0-160.14.1`
`atftp` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`0.7.0-160.14.1`

Products include Atftp Project Atftp, Debian Debian Linux.

How do I fix CVE-2021-46671?

Upgrade to a fixed version.

Is CVE-2021-46671 being exploited?

There is no known exploitation of CVE-2021-46671 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2021-46671, DLA-3028-1, GHSA-8982-hm8r-945r, SUSE-SU-2022:0881-1, UBUNTU-CVE-2021-46671.