CVE Catalog

CVE-2016-5261

High
Published: Translated: NVD NIST

Summary

Integer overflow in the WebSocketChannel class in the WebSockets subsystem in Mozilla Firefox before version 48.0 and Firefox ESR before version 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted packets that trigger incorrect buffer-resize operations during buffering.

Risk Assessment

An attacker can exploit this vulnerability to execute remote code, posing a serious security threat to systems using vulnerable versions of the browser. This could lead to data loss or system takeover.

Recommendation

It is recommended to update Mozilla Firefox to version 48.0 or later and Firefox ESR to version 45.4 or later to mitigate this vulnerability.

Related vulnerabilities

Original NVD description (English source)

Integer overflow in the WebSocketChannel class in the WebSockets subsystem in Mozilla Firefox before 48.0 and Firefox ESR < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted packets that trigger incorrect buffer-resize operations during buffering.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS