UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC client RRE decoder code, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.
[
{
"product": "UltraVNC",
"vendor": "UltraVNC",
"versions": [
{
"status": "affected",
"version": "1.2.2.3"
}
]
}
]
cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-006-ultravnc-out-of-bound-read/
us-cert.cisa.gov/ics/advisories/icsa-21-131-11
www.us-cert.gov/ics/advisories/icsa-20-161-06