CVE-2016-5270

CRITICAL

Firefox < 49.0 - Heap-based Buffer Overflow in nsCaseTransformTextRunFactory

Title source: llm
STIX 2.1

Description

Heap-based buffer overflow in the nsCaseTransformTextRunFactory::TransformString function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to cause a denial of service (boolean out-of-bounds write) or possibly have unspecified other impact via Unicode characters that are mishandled during text conversion.

References (10)

Core 10
Core References
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2016-86/
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3674
Issue Tracking x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1291016
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201701-15
Vendor Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2016-1912.html
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2016-88/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/93049
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1036852

Scores

CVSS v3 9.8
EPSS 0.0413
EPSS Percentile 88.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119 CWE-787
Status published
Products (5)
mozilla/firefox 45.1.0
mozilla/firefox 45.1.1
mozilla/firefox 45.2.0
mozilla/firefox 45.3.0
mozilla/firefox < 48.0.2
Published Sep 22, 2016
Tracked Since Feb 18, 2026