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USN-4547-1: iTALC vulnerabilities

28 September 2020

Several security issues were fixed in iTALC.

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Releases

Packages

  • italc - didact tool which allows teachers to view and control computer labs

Details

It was discovered that an information disclosure vulnerability existed in the
LibVNCServer vendored in iTALC when sending a ServerCutText message. An
attacker could possibly use this issue to expose sensitive information.
(CVE-2019-15681)

It was discovered that the LibVNCServer and LibVNCClient vendored in iTALC
incorrectly handled certain packet lengths. A remote attacker could possibly
use this issue to obtain sensitive information, cause a denial of service, or
execute arbitrary code.
(CVE-2018-15127 CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022,
CVE-2018-20023, CVE-2018-20024, CVE-2018-20748, CVE-2018-20749, CVE-2018-20750,
CVE-2018-7225, CVE-2019-15681)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-3877-1: libvncserver1, linuxvnc, libvncclient1, libvncserver0, libvncserver-dev, libvncserver-config, libvncserver
  • USN-4587-1: italc-master, italc-management-console, italc, italc-client, libitalccore
  • USN-4547-2: ssvnc
  • USN-3618-1: libvncserver1, linuxvnc, libvncclient1, libvncserver0, libvncserver-dev, libvncserver-config, libvncserver
  • USN-4573-1: vino
  • USN-4407-1: libvncserver1, libvncclient1, libvncserver-dev, libvncserver-config, libvncserver