[ASA-202101-24] atftp: denial of service

Morten Linderud foxboron at archlinux.org
Fri Jan 15 21:09:57 UTC 2021


Arch Linux Security Advisory ASA-202101-24
==========================================

Severity: Medium
Date    : 2021-01-12
CVE-ID  : CVE-2020-6097
Package : atftp
Type    : denial of service
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1395

Summary
=======

The package atftp before version 0.7.2-3 is vulnerable to denial of
service.

Resolution
==========

Upgrade to 0.7.2-3.

# pacman -Syu "atftp>=0.7.2-3"

The problem has been fixed upstream but no release is available yet.

Workaround
==========

None.

Description
===========

An exploitable denial of service vulnerability exists in the atftpd
daemon functionality of atftp 0.7.2. A specially crafted sequence of
RRQ-Multicast requests trigger an assert() call resulting in denial-of-
service. An attacker can send a sequence of malicious packets to
trigger this vulnerability.

Impact
======

A malicious remote user might crash the application by performing a
sequence of crafted queries.

References
==========

https://bugs.archlinux.org/task/69175
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1029
https://sourceforge.net/u/peterkaestle/atftp/ci/96409ef3b9ca061f9527cfaafa778105cf15d994/
https://security.archlinux.org/CVE-2020-6097
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <https://lists.archlinux.org/pipermail/arch-security/attachments/20210115/302524e9/attachment.sig>


More information about the arch-security mailing list