CVE-2014-0239

The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.

• CWE-20

• http://secunia.com/advisories/59579Third Party Advisory
• http://security.gentoo.org/glsa/glsa-201502-15.xmlThird Party Advisory
• http://www.samba.org/samba/security/CVE-2014-0239Vendor Advisory
• http://www.securityfocus.com/bid/67691Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1030309Third Party Advisory, VDB Entry
• http://secunia.com/advisories/59579Third Party Advisory
• http://security.gentoo.org/glsa/glsa-201502-15.xmlThird Party Advisory
• http://www.samba.org/samba/security/CVE-2014-0239Vendor Advisory
• http://www.securityfocus.com/bid/67691Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1030309Third Party Advisory, VDB Entry

Published

May 28, 2014

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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