CVE-2019-8258 - UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution

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CRITICAL

UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution

Published Mar 5, 2019

9.8

CRITICAL

CVSS 3.1

EPSS 4.43%

Description

UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.

Affected products

Vendor UltraVNC Product UltraVNC Default
n/a
- Version
  1.2.2.3
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

UltraVNC

n/a

Version	Status	Constraints
1.2.2.3	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-122

CWE-787

Out-of-bounds Write

References (3)

https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf
x_refsource_CONFIRMThird Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow/
x_refsource_MISCThird Party Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
x_refsource_MISCThird Party AdvisoryUS Government Resource

Link	Providers	Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf		x_refsource_CONFIRMThird Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow/		x_refsource_MISCThird Party Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-161-06		x_refsource_MISCThird Party AdvisoryUS Government Resource