CVE-2019-20788

high-risk
Published 2020-04-23

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.

Do I need to act?

-
0.80% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 54220248886b5001fbbb9fa73c4e1a2cb9413fed
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (14)

Affected Vendors

Debian Siemens Canonical Libvnc Project

References (10)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html
Patch https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
Patch https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9...
Exploit https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient
Third Party Advisory https://usn.ubuntu.com/4407-1/
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html
Patch https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
Patch https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9...
Exploit https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient
Third Party Advisory https://usn.ubuntu.com/4407-1/
53
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 3/34 · Minimal
Exposure 18/34 · Moderate