CVE-2012-5840

Use-after-free vulnerability in the nsTextEditorState::PrepareEditor function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors, a different vulnerability than CVE-2012-4214.

• CWE-416

• 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://osvdb.org/87606Broken Link, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2012-1482.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2012-1483.htmlThird Party Advisory
• http://secunia.com/advisories/51359Third Party Advisory
• http://secunia.com/advisories/51360Third Party Advisory
• http://secunia.com/advisories/51369Third Party Advisory
• http://secunia.com/advisories/51370Third Party Advisory
• http://secunia.com/advisories/51381Third Party Advisory
• http://secunia.com/advisories/51434Third Party Advisory
• http://secunia.com/advisories/51439Third Party Advisory
• http://secunia.com/advisories/51440Third Party Advisory
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:173Third Party Advisory
• http://www.mozilla.org/security/announce/2012/mfsa2012-105.htmlVendor Advisory
• http://www.palemoon.org/releasenotes-ng.shtmlBroken Link
• http://www.securityfocus.com/bid/56635Third 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=805287Exploit, Issue Tracking, Patch, Vendor Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/80190Third Party Advisory, VDB Entry
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16904Third 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://osvdb.org/87606Broken Link, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2012-1482.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2012-1483.htmlThird Party Advisory
• http://secunia.com/advisories/51359Third Party Advisory
• http://secunia.com/advisories/51360Third Party Advisory
• http://secunia.com/advisories/51369Third Party Advisory
• http://secunia.com/advisories/51370Third Party Advisory
• http://secunia.com/advisories/51381Third Party Advisory
• http://secunia.com/advisories/51434Third Party Advisory
• http://secunia.com/advisories/51439Third Party Advisory
• http://secunia.com/advisories/51440Third Party Advisory
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:173Third Party Advisory
• http://www.mozilla.org/security/announce/2012/mfsa2012-105.htmlVendor Advisory
• http://www.palemoon.org/releasenotes-ng.shtmlBroken Link
• http://www.securityfocus.com/bid/56635Third 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=805287Exploit, Issue Tracking, Patch, Vendor Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/80190Third Party Advisory, VDB Entry
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16904Third Party Advisory

Published

Nov 21, 2012

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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