CVE-2016-6830

Name	CVE-2016-6830
Description	The "process-execute" and "process-spawn" procedures in CHICKEN Scheme used fixed-size buffers for holding the arguments and environment variables to use in its execve() call. This would allow user-supplied argument/environment variable lists to trigger a buffer overrun. This affects all releases of CHICKEN up to and including 4.11 (it will be fixed in 4.12 and 5.0, which are not yet released).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-643-1
NVD severity	high
Debian Bugs	834845

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
chicken (PTS)	stretch	4.11.0-1	vulnerable
	buster	4.13.0-1	fixed
	bullseye, sid	5.2.0-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
chicken	source	wheezy	4.7.0-1+deb7u1		DLA-643-1
chicken	source	(unstable)	4.12.0-0.2			834845

Notes

[stretch] - chicken <no-dsa> (Minor issue)
[jessie] - chicken <no-dsa> (Minor issue)
http://lists.nongnu.org/archive/html/chicken-announce/2016-08/msg00001.html
https://lists.nongnu.org/archive/html/chicken-hackers/2016-07/txtSWHYeFeG0R.txt
http://bugs.call-cc.org/ticket/1308