CVE-2018-6307

moderate-risk

Published 2018-12-19

LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution.

Do I need to act?

9.5% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.1/10 High

NETWORK / HIGH complexity

Affected Products (7)

Libvncserver

Ubuntu Linux

Debian Linux

Affected Vendors

Debian Canonical Libvnc Project

References (11)

Third Party Advisory https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18...

Mailing List https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

Third Party Advisory https://usn.ubuntu.com/3877-1/

Third Party Advisory https://www.debian.org/security/2019/dsa-4383

Third Party Advisory https://github.com/LibVNC/libvncserver/issues/241

Third Party Advisory https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18...

Mailing List https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

Third Party Advisory https://usn.ubuntu.com/3877-1/

Third Party Advisory https://www.debian.org/security/2019/dsa-4383

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moderate-risk

Severity 24/34 · High

Exploitability 11/34 · Low

Exposure 14/34 · Moderate