CVE-2017-11343

Name	CVE-2017-11343
Description	Due to an incomplete fix for CVE-2012-6125, all versions of CHICKEN Scheme up to and including 4.12.0 are vulnerable to an algorithmic complexity attack. An attacker can provide crafted input which, when inserted into the symbol table, will result in O(n) lookup time.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	870266

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
chicken (PTS)	buster	4.13.0-1	fixed
	bullseye	5.2.0-2	fixed
	bookworm	5.3.0-1	fixed
	sid, trixie	5.3.0-1.1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
chicken	source	(unstable)	4.12.0-0.2			870266

Notes

[stretch] - chicken <no-dsa> (Minor issue)
[jessie] - chicken <no-dsa> (Minor issue)
[wheezy] - chicken <no-dsa> (Minor issue)
http://lists.nongnu.org/archive/html/chicken-announce/2017-07/msg00000.html