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USN-4587-1: iTALC vulnerabilities

20 October 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

Nicolas Ruff discovered that iTALC had buffer overflows, divide-by-zero errors
and didn't check malloc return values. A remote attacker could use these issues
to cause a denial of service or possibly execute arbitrary code.
(CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055)

Josef Gajdusek discovered that iTALC had heap-based buffer overflow
vulnerabilities. A remote attacker could used these issues to cause a denial of
service or possibly execute arbitrary code. (CVE-2016-9941, CVE-2016-9942)

It was discovered that iTALC had an out-of-bounds write, multiple heap
out-of-bounds writes, an infinite loop, improper initializations, and null
pointer vulnerabilities. A remote attacker could used these issues to cause a
denial of service or possibly 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 16.04

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

Related notices

  • USN-3877-1: libvncserver1, libvncserver0, libvncserver, libvncclient1, libvncserver-dev, libvncserver-config, linuxvnc
  • USN-4547-1: italc-client, italc, italc-master, libitalccore
  • USN-2365-1: libvncserver0, libvncserver, libvncserver-dev, libvncserver-config, linuxvnc
  • USN-4547-2: ssvnc
  • USN-3171-1: libvncserver1, libvncserver0, libvncserver, libvncclient1, libvncserver-dev, libvncserver-config, linuxvnc
  • USN-4407-1: libvncserver1, libvncserver, libvncclient1, libvncserver-dev, libvncserver-config
  • USN-4573-1: vino
  • USN-3618-1: libvncserver1, libvncserver0, libvncserver, libvncclient1, libvncserver-dev, libvncserver-config, linuxvnc