Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Uvnc | Ultravnc | < 1.2.2.3 |
| Siemens | Sinumerik Access Mymachine\/P2P | < 4.8 |
| Siemens | Sinumerik Pcu Base Win10 Software\/Ipc | < 14.00 |
| Siemens | Sinumerik Pcu Base Win7 Software\/Ipc | <= 12.01 |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfThird Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
- https://www.us-cert.gov/ics/advisories/icsa-20-161-06Third Party AdvisoryUS Government Resource
- https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfThird Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11
- https://www.us-cert.gov/ics/advisories/icsa-20-161-06Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2019-8259?
CVE-2019-8259 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 vul...
How severe is CVE-2019-8259?
CVE-2019-8259 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-8259?
Check the references section above for vendor advisories and patch information. Affected products include: Uvnc Ultravnc, Siemens Sinumerik Access Mymachine\/P2P, Siemens Sinumerik Pcu Base Win10 Software\/Ipc, Siemens Sinumerik Pcu Base Win7 Software\/Ipc.