CVE-2012-0960: Unity integration extension (unity-firefox-extension) before 2.4.1 for Firefox does not properly handle callba

Q: How do I fix CVE-2012-0960?

unity-firefox-extension: upgrade to newer than 2.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2012-0960 being exploited?

CVE-2012-0960 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2012-0960 affect?

CVE-2012-0960 affects unity-firefox-extension. Severity is high (CVSS 7.5). Unity integration extension (unity-firefox-extension) before 2.4.1 for Firefox does not properly handle callbacks, which allows remote attackers to cause a denial of service (Firefox crash) and possibly execute arbitrary code via a crafted

This month

HIGH 7.5UPGRADE

CVE-2012-0960 is a high-severity flaw (CVSS 7.5) affecting unity-firefox-extension. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unity integration extension (unity-firefox-extension) before 2.4.1 for Firefox does not properly handle callbacks, which allows remote attackers to cause a denial of service (Firefox crash) and possibly execute arbitrary code via a crafted request.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-20
Published	2012-11-24
Last modified	2026-06-16

Publisher (CNA): Canonical Ltd. · Vendor: ps project management team

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-11-24 20:55 UTCPublished CVE record published
2026-06-16 23:38 UTCUpdated Record last modified

ps project management team unity-firefox-extension UPGRADE

Affected: <= 2.4.0 · 0.02 · 0.2.1 · 0.3 · 0.3.1 · 2.1 · 2.2 · 2.3

Fixed in: newer than 2.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy unity-firefox-extension || rpm -q unity-firefox-extension || unity-firefox-extension --version

2. UPGRADE to newer than 2.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade unity-firefox-extension

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unity-firefox-extension

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-0960?

unity-firefox-extension: upgrade to newer than 2.4.0. Exact commands for each OS are on this page.

Is CVE-2012-0960 being exploited?

CVE-2012-0960 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-0960 affect?

CVE-2012-0960 affects unity-firefox-extension. Severity is high (CVSS 7.5). Unity integration extension (unity-firefox-extension) before 2.4.1 for Firefox does not properly handle callbacks, which allows remote attackers to cause a denial of service (Firefox crash) and possibly execute arbitrary code via a crafted

How urgent is CVE-2012-0960?

Priority 49/100. High severity

Software pages

Mozilla Firefox vulnerabilities · Unity vulnerabilities

Related CVEs

CVE-2013-1055 MEDIUM 4.3 MITIGATE MITIGATE The unity-firefox-extension package could be tricked into dropping a C callback which was still in use, which
CVE-2013-1054 MEDIUM 4.3 MITIGATE MITIGATE The unity-firefox-extension package could be tricked into destroying the Unity webapps context, causing Firefo
CVE-2012-0958 MEDIUM 4.3 DOWNGRADE content/unity-api.js in the unity-firefox-extension extension 2.4.1 for Firefox exposes the toDataURL function

References

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