CVE-2012-4218

Name: CVE-2012-4218
Creator: NVD / NIST
Published: 2012-11-21T12:55:02.557+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.61%

Last modified Jun 16, 2026

CVE-2012-4218 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.61% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

5.61%

91.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Mozilla	Firefox	< 17.0	—
Mozilla	Seamonkey	< 2.14	—
Mozilla	Thunderbird	< 17.0	—
Canonical	Ubuntu Linux	10.04	—
Canonical	Ubuntu Linux	11.10	—
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	12.10	—
Opensuse	Opensuse	11.4	—
Opensuse	Opensuse	12.1	—
Opensuse	Opensuse	12.2	—
Suse	Linux Enterprise Desktop	10	Sp4
Suse	Linux Enterprise Desktop	11	Sp2
Suse	Linux Enterprise Server	10	Sp4
Suse	Linux Enterprise Server	11	Sp2
Suse	Linux Enterprise Software Development Kit	11	Sp2

References

http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.htmlMailing List, Third Party Advisory
http://secunia.com/advisories/51369Broken Link
http://secunia.com/advisories/51370Broken Link
http://secunia.com/advisories/51381Broken Link
http://secunia.com/advisories/51434Broken Link
http://secunia.com/advisories/51439Broken Link
http://secunia.com/advisories/51440Broken Link
http://www.mozilla.org/security/announce/2012/mfsa2012-105.htmlVendor Advisory
http://www.securityfocus.com/bid/56640Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1636-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1638-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1638-2Third Party Advisory
http://www.ubuntu.com/usn/USN-1638-3Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=767765Issue Tracking, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16885Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.htmlMailing List, Third Party Advisory
http://secunia.com/advisories/51369Broken Link
http://secunia.com/advisories/51370Broken Link
http://secunia.com/advisories/51381Broken Link
http://secunia.com/advisories/51434Broken Link
http://secunia.com/advisories/51439Broken Link
http://secunia.com/advisories/51440Broken Link
http://www.mozilla.org/security/announce/2012/mfsa2012-105.htmlVendor Advisory
http://www.securityfocus.com/bid/56640Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1636-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1638-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1638-2Third Party Advisory
http://www.ubuntu.com/usn/USN-1638-3Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=767765Issue Tracking, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16885Third Party Advisory

Timeline

Published: Nov 21, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4218?

How severe is CVE-2012-4218?

Severity scoring for CVE-2012-4218 is pending analysis. The EPSS model estimates a 5.61% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4218?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-4218?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST