CVE-2019-8264

UltraVNC revision 1203 has out-of-bounds access vulnerability in VNC client inside Ultra2 decoder, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1204.

Weakness

The product reads or writes to a buffer using an index or pointer that references a memory location after the end of the buffer.

Affected Software

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-19-011-ultravnc-access-of-memory-location-after-end-of-buffer/
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06
• 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-19-011-ultravnc-access-of-memory-location-after-end-of-buffer/
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
• https://www.us-cert.gov/ics/advisories/icsa-20-161-06