CVE-2014-0239

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 9.37% Top 10%
Vendor Advisory gentoo.org Vendor Advisory samba.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.samba.org/samba/security/CVE-2014-0239 vendor advisory
http://security.gentoo.org/glsa/glsa-201502-15.xml third party advisory vendor advisory
http://www.securityfocus.com/bid/67691 third party advisory vdb entry
http://secunia.com/advisories/59579 third party advisory
http://www.securitytracker.com/id/1030309 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2014-0239?
CVE-2014-0239 has been scored as a medium severity vulnerability.
How to fix CVE-2014-0239?
To fix CVE-2014-0239, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2014-0239 being actively exploited in the wild?
It is possible that CVE-2014-0239 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~9% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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