CVE-2019-8263

Summary

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.

Affected Software

Weaknesses

• CWE-121: CWE-121: Stack-based Buffer Overflow

ADP Enrichment

CVE Program Container

Additional References

• 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://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06
• https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11

References

• 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://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06
• https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11

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