CVE-2012-4191

CRITICAL 9.3CVE-2012-4191 · Published 12/10/2012 · updated 16/06/2026

In short

CVE-2012-4191 is a CRITICAL (CVSS 9.3) vulnerability affecting firefox (mozilla), seamonkey (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 3.9%, higher than 90.2% of all vulnerabilities.
Fix: update to 16.0.1, 2.13.1 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 16.0.1`	`16.0.1`
seamonkey mozilla	`< 2.13.1`	`2.13.1`
thunderbird mozilla	`< 16.0.1`	`16.0.1`

Description

The mozilla::net::FailDelayManager::Lookup function in the WebSockets implementation in Mozilla Firefox before 16.0.1, Thunderbird before 16.0.1, and SeaMonkey before 2.13.1 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

References

osvdb.org/86125 · Broken Link
secunia.com/advisories/50904 · Third Party Advisory
secunia.com/advisories/50929 · Third Party Advisory
secunia.com/advisories/50984 · Third Party Advisory
mozilla.org/security/announce/2012/mfsa2012-88.html · Vendor Advisory
securitytracker.com/id · Third Party Advisory
ubuntu.com/usn/USN-1608-1 · Third Party Advisory
ubuntu.com/usn/USN-1611-1 · Third Party Advisory
bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
exchange.xforce.ibmcloud.com/vulnerabilities/79209 · Third Party Advisory
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16719 · Third Party Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

< 16.0.1

16.0.1

seamonkey

mozilla

< 2.13.1

2.13.1

thunderbird

mozilla

< 16.0.1

16.0.1

Description

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