Buffer overflow in Libvnc Project Libvncserver
CVE-2018-20749
LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
Weakness classification (CWE)
References
- lists.debian.org/debian-lts-announce/2019/01/msg00029.html (mailing-list, Third Party Advisory)
- www.securityfocus.com/bid/106825 (vdb-entry, Broken Link)
- github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707 (Patch, Third Party Advisory)
- github.com/LibVNC/libvncserver/issues/273 (Third Party Advisory, Issue Tracking)
- usn.ubuntu.com/3877-1/ (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2018/12/10/8 (Exploit, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00042.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4547-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4587-1/ (vendor-advisory, Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-20749?
- CVE-2018-20749 is a critical-severity vulnerability in Libvnc Project Libvncserver, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-01-30.
- How severe is CVE-2018-20749?
- Critical severity. CVSS v3 base score is 9.8 out of 10.