CVE-2019-11366

Name	CVE-2019-11366
Description	An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1783-1, DSA-4438-1
Debian Bugs	927553

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
atftp (PTS)	jessie, jessie (lts)	0.7.git20120829-1+deb8u2	fixed
	stretch (security), stretch (lts), stretch	0.7.git20120829-3.1~deb9u3	fixed
	buster	0.7.git20120829-3.2~deb10u3	fixed
	bullseye	0.7.git20120829-3.3+deb11u2	fixed
	bookworm	0.8.0-3	fixed
	sid, trixie	0.8.0-5	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
atftp	source	wheezy	(unfixed)	end-of-life
atftp	source	jessie	0.7.git20120829-1+deb8u1		DLA-1783-1
atftp	source	stretch	0.7.git20120829-3.1~deb9u1		DSA-4438-1
atftp	source	(unstable)	0.7.git20120829-3.1			927553

Notes

https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities
https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/