CVE-2013-1055

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

MEDIUM
4.3
CVSS Score
Published: April 7, 2021 at 07:20 PM UTC
Updated: June 16, 2026 at 11:50 PM UTC
3 products affected across 1 vendorUbuntu LinuxUnity Firefox ExtensionLibunity Webapps

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Severity
MEDIUM4.3
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.0.0\+14.04.20140416-0ubuntu1.14.04.13.0.0 ≤ v < 3.0.0+14.04.20140416-0ubuntu1.14.04.13.0.0
Affected range stops below 3.0.0+14.04.20140416-0ubuntu1.14.04.1, so it looks safe — our inference, not a vendor statement
2.5.0 ≤ v < 2.5.0~+14.04.20140409-0ubuntu12.5.0
Affected range stops below 2.5.0~+14.04.20140409-0ubuntu1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Vendor Advisoryx_refsource_UBUNTUExploit
https://launchpad.net/bugs/1175691
Vendor Advisoryx_refsource_UBUNTU
https://ubuntu.com/USN-2743-3

CVSS

4.3MEDIUMcanonical
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-404

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