LibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.
www.securityfocus.com/bid/106825
cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
github.com/LibVNC/libvncserver/commit/09e8fc02f59f16e2583b34fe1a270c238bd9ffec
github.com/LibVNC/libvncserver/issues/273
lists.debian.org/debian-lts-announce/2019/01/msg00029.html
lists.debian.org/debian-lts-announce/2019/10/msg00042.html
usn.ubuntu.com/3877-1/
usn.ubuntu.com/4547-1/
usn.ubuntu.com/4587-1/
www.openwall.com/lists/oss-security/2018/12/10/8