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.

Score

CVSS 3.1 6.5 Medium

Status

Modified - vulnerability@kaspersky.com

Published

2019-03-05

Last modified

2024-09-16

Weaknesses

CWE-121, CWE-787

Affected products

• Ultravnc (Kaspersky Lab)
• Sinumerik Access Mymachine/p2p (Siemens)
• Sinumerik Pcu Base Win10 Software/ipc (Siemens)
• Sinumerik Pcu Base Win7 Software/ipc (Siemens)
• Ultravnc (Uvnc)

References

• 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…
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-010-ultravnc-stack-based-buffer-overfl…
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06