What’s Vulnerable › Vulnerabilities

CVE-2014-1524

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2014-04-30 · updated 2026-06-17
• Weakness: CWE-120

Description

The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object.

Affected products

• Canonical Ubuntu Linux: 12.04, 12.10, 13.10, 14.04
• Debian Linux: 7.0, 8.0
• Fedoraproject Fedora: 19, 20
• Mozilla Firefox: before 29.0; from 24.0 before 24.5 — fixed in 24.5, 29.0
• Mozilla Seamonkey: before 2.26 — fixed in 2.26
• Mozilla Thunderbird: before 24.5 — fixed in 24.5
• Opensuse: 11.4, 12.3, 13.1
• RedHat Enterprise Linux Desktop: 5.0, 6.0
• RedHat Enterprise Linux Eus: 6.5
• RedHat Enterprise Linux Server: 5.0, 6.0
• RedHat Enterprise Linux Server Aus: 6.5
• RedHat Enterprise Linux Server Eus: 6.5
• RedHat Enterprise Linux Server Tus: 6.5
• RedHat Enterprise Linux Workstation: 5.0, 6.0
• SUSE Linux Enterprise: 10-sp4, 11-sp1

How to fix

Upgrade to a fixed version: Mozilla Firefox 24.5, 29.0; Mozilla Seamonkey 2.26; Mozilla Thunderbird 24.5. Check the vendor advisory for mitigations.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132332.html
• http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html
• http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00015.html
• http://lists.opensuse.org/opensuse-updates/2014-05/msg00010.html
• http://lists.opensuse.org/opensuse-updates/2014-05/msg00013.html
• http://lists.opensuse.org/opensuse-updates/2014-05/msg00033.html
• http://lists.opensuse.org/opensuse-updates/2014-05/msg00040.html
• http://rhn.redhat.com/errata/RHSA-2014-0448.html
• http://rhn.redhat.com/errata/RHSA-2014-0449.html
• http://secunia.com/advisories/59866
• http://www.debian.org/security/2014/dsa-2918

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