CVE-2012-4218

CRITICAL 10.0CVE-2012-4218 · Published 21/11/2012 · updated 16/06/2026

In short

CVE-2012-4218 is a CRITICAL (CVSS 10.0) vulnerability affecting firefox (mozilla), seamonkey (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 5.6%, higher than 92.9% of all vulnerabilities.
Fix: update to 17.0, 2.14 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 17.0`	`17.0`
seamonkey mozilla	`< 2.14`	`2.14`
thunderbird mozilla	`< 17.0`	`17.0`

Description

Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

References

lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html · Mailing List
lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html · Mailing List
lists.opensuse.org/opensuse-updates/2012-11/msg00090.html · Mailing List
lists.opensuse.org/opensuse-updates/2012-11/msg00092.html · Mailing List
lists.opensuse.org/opensuse-updates/2012-11/msg00093.html · Mailing List
secunia.com/advisories/51369 · Broken Link
secunia.com/advisories/51370 · Broken Link
secunia.com/advisories/51381 · Broken Link
secunia.com/advisories/51434 · Broken Link
secunia.com/advisories/51439 · Broken Link
secunia.com/advisories/51440 · Broken Link
mozilla.org/security/announce/2012/mfsa2012-105.html

More vulnerabilities in firefox

See all →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free