CVE-2016-5270

critical

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

http://rhn.redhat.com/errata/RHSA-2016-1912.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1291016

https://security.gentoo.org/glsa/201701-15

https://www.mozilla.org/security/advisories/mfsa2016-86/

https://www.mozilla.org/security/advisories/mfsa2016-88/

http://www.debian.org/security/2016/dsa-3674

http://www.mozilla.org/security/announce/2016/mfsa2016-85.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

http://www.securitytracker.com/id/1036852

Details

Source: Mitre, NVD

Published: 2016-09-22

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical