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

EPSS: 0.024 (82.5th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
  • cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (x_refsource_CONFIRM, 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.