There is an illegal READ memory access at caca/dither.c (function
get_rgba_default) in libcaca 0.99.beta19 for 24bpp data.
bugzilla.redhat.com/show_bug.cgi?id=1652624
github.com/cacalabs/libcaca/issues/39
launchpad.net/bugs/cve/CVE-2018-20547
nvd.nist.gov/vuln/detail/CVE-2018-20547
security-tracker.debian.org/tracker/CVE-2018-20547
ubuntu.com/security/notices/USN-3860-1
ubuntu.com/security/notices/USN-3860-2
www.cve.org/CVERecord?id=CVE-2018-20547