Use After Free Affecting libvncserver package, versions <0.9.11+dfsg-1.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBVNCSERVER-316898
- published19 Dec 2018
- disclosed19 Dec 2018
Introduced: 19 Dec 2018
CVE-2018-6307 (opens in a new tab)How to fix?
Upgrade Debian:unstable libvncserver to version 0.9.11+dfsg-1.2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libvncserver package and not the libvncserver package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution.
References
- https://security-tracker.debian.org/tracker/CVE-2018-6307
- https://www.debian.org/security/2019/dsa-4383
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://github.com/LibVNC/libvncserver/issues/241
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-026-libvnc-heap-use-after-free/
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-6307
- https://usn.ubuntu.com/3877-1/