CVE-2013-1055

Public Exploit
Potential DoS through abuse of rate limit in libunity-webapps for Firefox

Description

The unity-firefox-extension package could be tricked into dropping a C callback which was still in use, which Firefox would then free, causing Firefox to crash. This could be achieved by adding an action to the launcher and updating it with new callbacks until the libunity-webapps rate limit was hit. Fixed in 3.0.0+14.04.20140416-0ubuntu1.14.04.1 of unity-firefox-extension and in all versions of libunity-webapps by shipping an empty unity-firefox-extension package, thus disabling the extension entirely and invalidating the attack against the libunity-webapps package.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.21%
Vendor Advisory ubuntu.com Vendor Advisory launchpad.net
Affected: Canonical unity-firefox-extension
Affected: Canonical libunity-webapps
Published at:
Updated at:

References

Link Tags
https://ubuntu.com/USN-2743-3 vendor advisory
https://launchpad.net/bugs/1175691 vendor advisory exploit

Frequently Asked Questions

What is the severity of CVE-2013-1055?
CVE-2013-1055 has been scored as a medium severity vulnerability.
How to fix CVE-2013-1055?
To fix CVE-2013-1055, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-1055 being actively exploited in the wild?
It is possible that CVE-2013-1055 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2013-1055?
CVE-2013-1055 affects Canonical unity-firefox-extension, Canonical libunity-webapps.
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