An issue was discovered in LibTIFF 4.0.9. There are two out-of-bounds writes in cpTags in tools/tiff2bw.c and tools/pal2rgb.c, which can cause a denial of service (application crash) or possibly have unspecified other impact via a crafted image file.
http://bugzilla.maptools.org/show_bug.cgi?id=2807
http://www.securityfocus.com/bid/105370
https://access.redhat.com/errata/RHSA-2019:2053
https://lists.debian.org/debian-lts-announce/2018/10/msg00019.html
https://usn.ubuntu.com/3864-1/
Source: MITRE
Published: 2018-09-16
Updated: 2019-03-21
Type: CWE-787
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8
Severity: HIGH