CVE-2018-20450

Name	CVE-2018-20450
Description	The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.
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	919324

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
r-cran-readxl (PTS)	stretch	0.1.1-1+deb9u2	fixed
	stretch (security), stretch (lts)	0.1.1-1+deb9u1	vulnerable
	buster	1.3.0-1	fixed
	bullseye	1.3.1-2	fixed
	bookworm	1.4.2-1	fixed
	sid, trixie	1.4.3-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
r-cran-readxl	source	stretch	0.1.1-1+deb9u2
r-cran-readxl	source	(unstable)	1.2.0.9000-1			919324

https://github.com/evanmiller/libxls/issues/34