CVSS: 9.8EPSS: 1%CPEs: 4EXPL: 0CVE-2019-8258
https://notcve.org/view.php?id=CVE-2019-8258
UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199. UltraVNC, en su revisión 1198, tiene una vulnerabilidad de desbordamiento de búfer de memoria dinámica (heap) en el código del cliente VNC, lo que resulta en la ejecución de código. Este ataque parece ser explotable mediante la conectividad de red. • https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow https://www.us-cert.gov/ics/advisories/icsa-20-161-06 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2019-8259
https://notcve.org/view.php?id=CVE-2019-8259
UltraVNC revision 1198 contains multiple memory leaks (CWE-655) in VNC client code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1199. UltraVNC, en su revisión 1198, contiene múltiples fugas de memoria (CWE-655) en el código del cliente VNC, lo que permite que un atacante lea memoria de la pila y puede aprovecharse para divulgar información. • https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-005-ultravnc-memory-leak https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11 https://www.us-cert.gov/ics/advisories/icsa-20-161-06 • CWE-401: Missing Release of Memory after Effective Lifetime CWE-665: Improper Initialization •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2019-8263
https://notcve.org/view.php?id=CVE-2019-8263
UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206. UltraVNC, en su revisión 1205, tiene un desbordamiento de búfer basado en pila en el código del cliente VNC dentro de la rutina ShowConnInfo, lo cual conduce a una condición de denegación de servicio (DoS). • https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-009-ultravnc-access-of-memory-location-after-end-of-buffer https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-010-ultravnc-stack-based-buffer-overflow https://us-cert.cisa.gov/ics/advisories/icsa- • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •