SARA / Free Tools / CVE / CVE-2019-8266

CVE-2019-8266 — UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connect

UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of ClientConnection::Copybuffer function in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. User

CVSS
— —
EPSS
1.26% (top 20.80%)
CWE
CWE-788
Published
2019-03-09T00:00:00.000Z
Last modified
2024-09-16T23:05:39.052Z
CVSS vector
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01What is this vulnerability?

UltraVNC revision 1207 has multiple out-of-bounds access vulnerabilities connected with improper usage of ClientConnection::Copybuffer function in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. User interaction is required to trigger these vulnerabilities. These vulnerabilities have been fixed in revision 1208.

02Affected products

VendorProductVersions
Kaspersky LabUltraVNC1.2.2.3

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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