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: 9.8EPSS: 1%CPEs: 1EXPL: 0CVE-2019-8260
https://notcve.org/view.php?id=CVE-2019-8260
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. UltraVNC, en su revisión 1198, contiene una vulnerabilidad de lectura fuera de límites en el código del decodificador RRE del cliente VNC, provocado por el desbordamiento de multiplicaciones. Este ataque parece ser explotable mediante la conectividad de red. • 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-19-006-ultravnc-out-of-bound-read https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11 https://www.us-cert.gov/ics/advisories/icsa-20-161-06 • CWE-125: Out-of-bounds Read •
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: 10.0EPSS: 0%CPEs: 1EXPL: 1CVE-2006-2206
https://notcve.org/view.php?id=CVE-2006-2206
The MS-Logon authentication scheme in UltraVNC (aka Ultr@VNC) 1.0.1 uses weak encryption (XOR) for challenge/response, which allows remote attackers to gain privileges by sniffing and decrypting passwords. • http://archives.neohapsis.com/archives/bugtraq/2006-05/0057.html http://www.securityfocus.com/bid/17824 https://exchange.xforce.ibmcloud.com/vulnerabilities/26283 •