CVE-2016-5261

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.

• CWE-190

• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
• http://rhn.redhat.com/errata/RHSA-2016-1912.html
• http://www.debian.org/security/2016/dsa-3674
• http://www.mozilla.org/security/announce/2016/mfsa2016-75.htmlVendor Advisory
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
• http://www.securityfocus.com/bid/92260
• http://www.securitytracker.com/id/1036508
• http://www.ubuntu.com/usn/USN-3044-1
• https://bugzilla.mozilla.org/show_bug.cgi?id=1287266Issue Tracking, Permissions Required
• https://security.gentoo.org/glsa/201701-15
• https://www.mozilla.org/security/advisories/mfsa2016-86/
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
• http://rhn.redhat.com/errata/RHSA-2016-1912.html
• http://www.debian.org/security/2016/dsa-3674
• http://www.mozilla.org/security/announce/2016/mfsa2016-75.htmlVendor Advisory
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
• http://www.securityfocus.com/bid/92260
• http://www.securitytracker.com/id/1036508
• http://www.ubuntu.com/usn/USN-3044-1
• https://bugzilla.mozilla.org/show_bug.cgi?id=1287266Issue Tracking, Permissions Required
• https://security.gentoo.org/glsa/201701-15
• https://www.mozilla.org/security/advisories/mfsa2016-86/

Published

Aug 5, 2016

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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