CVE-2016-5270: Buffer Overflow
An out-of-bounds write of a boolean value during text conversion with some unicode characters
Other sources
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.
— Launchpad
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is CVE-2016-5270?
CVE-2016-5270 is a vulnerability in Mozilla Firefox, Firefox ESR, and Thunderbird that allows remote attackers to cause a denial of service or possibly have unspecified other impact.
What is the severity of CVE-2016-5270?
The severity of CVE-2016-5270 is critical (9.8).
How does CVE-2016-5270 affect Mozilla Firefox and Thunderbird?
CVE-2016-5270 affects Mozilla Firefox versions before 49.0, Firefox ESR versions before 45.4, and Thunderbird versions before 45.4.
How can I fix CVE-2016-5270?
To fix CVE-2016-5270, update to Mozilla Firefox version 49.0 or later, Firefox ESR version 45.4 or later, or Thunderbird version 45.4 or later.
Where can I find more information about CVE-2016-5270?
You can find more information about CVE-2016-5270 on the following references: - [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1291016) - [Mozilla Security Advisories](https://www.mozilla.org/en-US/security/advisories/mfsa2016-85/) - [Red Hat Security Advisory](http://rhn.redhat.com/errata/RHSA-2016-1912.html)