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Ubuntu 16.04 LTS USN-4522-1 Moderate: noVNC Code Execution Risk

ubuntu
Calendar Grey September 21, 2020
Dist Ubuntu Esm H88
Explore the Ubuntu USN-4522-1 announcement, highlighting vulnerabilities in noVNC that pose potential code execution threats.
noVNC could be made to execute arbitrary code.

Summary

noVNC could be made to execute arbitrary code.

Software Description:

- novnc: HTML5 VNC client - daemon and programs

Details:

It was discovered that noVNC did not properly manage certain messages,

resulting in the remote VNC server injecting arbitrary HTML into the

noVNC web page. An attacker could use this issue to conduct cross-site

scripting (XSS) attacks. (CVE-2017-18635)

Topics%20covered

Topics Covered

security advisory code execution cross-site scripting Ubuntu noVNC

Update Instructions

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

Ubuntu 16.04 LTS:
  novnc
1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1
  python-novnc
1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1

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

References

https://ubuntu.com/security/notices/USN-4522-1

CVE-2017-18635

Severity
important
Lowest
Low
Medium
High
Critical

September 21, 2020

Topics%20covered

Topics Covered

security advisory code execution cross-site scripting Ubuntu noVNC

Package Information

https://launchpad.net/ubuntu/+source/novnc/1:0.4+dfsg+1+20131010+gitf68af8af3d-4+deb8u1build0.16.04.1

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