CVE-2014-1524

critical

Published 2014-04-30 · Modified 2026-05-06

CVSS v3

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2

7.5

VIR risk

9.8

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.

Predictions

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security@mozilla.org — https://bugzilla.mozilla.org/show_bug.cgi?id=989183

vendor Authored 2026-05-27

Vendor advisory: security@mozilla.org — http://www.mozilla.org/security/announce/2014/mfsa2014-38.html

OS impact

OS	Version	Status
ubuntu	12.04	affected
ubuntu	12.10	affected
ubuntu	13.10	affected
ubuntu	14.04	affected
debian	7.0	affected
debian	8.0	affected
rhel	5.0	affected
rhel	6.0	affected
rhel	6.5	affected
suse	11.4	affected
suse	12.3	affected
suse	13.1	affected
suse	10	affected
suse	11	affected
fedora	19	affected
fedora	20	affected

Application impact

Vendor	Product	Versions	Fixed
mozilla	firefox	`{"endExcluding":"29.0"}`	`29.0`
mozilla	seamonkey	`{"endExcluding":"2.26"}`	`2.26`
mozilla	thunderbird	`{"endExcluding":"24.5"}`	`24.5`

References

CWEs

CWE-120

Verify integrity in audit chain (admin only). AS-IS.