CVE-2019-8280

UltraVNC revision 1203 has out-of-bounds access vulnerability in VNC client inside RAW decoder, which can potentially result code execution. This attack appear 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-19-009-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-19-009-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