A libvncserver security update has been released for Debian GNU/Linux 10 to address two issues.

DLA 3125-1: libvncserver security update

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Debian LTS Advisory DLA-3125-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
September 30, 2022   https://wiki.debian.org/LTS
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Package : libvncserver
Version : 0.9.11+dfsg-1.3+deb10u5
CVE ID : CVE-2020-25708 CVE-2020-29260

Two issues have been found in libvncserver, a library to write one's own
VNC server.

CVE-2020-25708

Due to some missing checks, a divide by zero could happen, which could
result in a denial of service.

CVE-2020-29260

Due to a memory leak in function rfbClientCleanup() a remote attacker
might be able to cause a denial of service.


For Debian 10 buster, these problems have been fixed in version
0.9.11+dfsg-1.3+deb10u5.

We recommend that you upgrade your libvncserver packages.

For the detailed security status of libvncserver please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/libvncserver

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS