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.
Created libtiff tracking bugs for this issue:
Affects: fedora-all [bug 1631079]
Created mingw-libtiff tracking bugs for this issue:
Affects: epel-7 [bug 1631082]
Affects: fedora-all [bug 1631080]
Out of bounds write, seems non-exploitable, so mostly crash only.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2019:2053 https://access.redhat.com/errata/RHSA-2019:2053
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):