Use After Free in Libvnc Project Libvncserver
CVE-2018-6307
LibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.265 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.265 · newest: 0.265 · change: 0.000
Affected products
- Libvnc Project Libvncserver
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
- Libvnc — versions commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b
Weakness classification (CWE)
References
- ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-026-li… (Third Party Advisory)
- www.debian.org/security/2019/dsa-4383 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/12/msg00017.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3877-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00042.html (mailing-list)
- github.com/LibVNC/libvncserver/issues/241 (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-6307?
- CVE-2018-6307 is a high-severity vulnerability in Libvnc Project Libvncserver, classified under Use After Free. CVSS score: 8.1/10. Published 2018-12-19.
- How severe is CVE-2018-6307?
- High severity. CVSS v3 base score is 8.1 out of 10.