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==========================================================================
Ubuntu Security Notice USN-4594-1
October 20, 2020

quassel vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

Quassel could be made to crash or run programs if it received
specially crafted network traffic.

Software Description:
- quassel: distributed IRC client - monolithic core+client

Details:

It was discovered that Quassel incorrectly handled Qdatastream protocol. A
remote attacker could possibly use this issue to execute arbitrary code.
(CVE-2018-1000178)

It was discovered that Quassel incorrectly handled certain login requests.
A remote attacker could possibly use this issue to cause a denial of
service. (CVE-2018-1000179)

Update instructions:

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

Ubuntu 18.04 LTS:
  quassel                         1:0.12.4-3ubuntu1.18.04.3
  quassel-core                    1:0.12.4-3ubuntu1.18.04.3

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

References:
  https://usn.ubuntu.com/4594-1
  CVE-2018-1000178, CVE-2018-1000179

Package Information:
  https://launchpad.net/ubuntu/+source/quassel/1:0.12.4-3ubuntu1.18.04.3

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