Buffer overflow in Libvnc Project Libvncserver
CVE-2019-20788
libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.
Vulnerability class: Integer 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: 0.025 (84.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.025 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed (Patch, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html (vendor-advisory, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4407-1/ (vendor-advisory, Third Party Advisory)
- securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient (Exploit, Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-20788?
- CVE-2019-20788 is a critical-severity vulnerability in Libvnc Project Libvncserver, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2020-04-23.
- How severe is CVE-2019-20788?
- Critical severity. CVSS v3 base score is 9.8 out of 10.