Description
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.
References (4)
Core 4
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
Patch, Third Party Advisory x_refsource_misc
https://github.com/LibVNC/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4434-1/
Patch, Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
Scores
CVSS v3
7.5
EPSS
0.0158
EPSS Percentile
81.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (14)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04 (2 CPE variants)
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
18.10
canonical/ubuntu_linux
20.04
debian/debian_linux
8.0
debian/debian_linux
9.0
libvnc_project/libvncserver
< 0.9.12
siemens/simatic_itc1500_firmware
3.0.0.0 - 3.2.1.0
siemens/simatic_itc1500_pro_firmware
3.0.0.0 - 3.2.1.0
... and 4 more
Published
Jun 17, 2020
Tracked Since
Feb 18, 2026