Public Date:
1175369: CVE-2014-9402 glibc: denial of service in getnetbyname function

The MITRE CVE dictionary describes this issue as:

The nss_dns implementation of getnetbyname in GNU C Library (aka glibc) before 2.21, when the DNS backend in the Name Service Switch configuration is enabled, allows remote attackers to cause a denial of service (infinite loop) by sending a positive answer while a network name is being process.

Find out more about CVE-2014-9402 from the MITRE CVE dictionary dictionary and NIST NVD.


A non-standard system configuration ("networks: file dns" in /etc/nsswitch.conf) and possibly a DNS spoofing attack is required to exploit this flaw.

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification:

CVSS v2 metrics

Base Score 1.2
Base Metrics AV:L/AC:H/Au:N/C:N/I:N/A:P
Access Vector Local
Access Complexity High
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (glibc) RHSA-2018:0805 2018-04-10

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 glibc Will not fix
Red Hat Enterprise Linux 5 glibc Will not fix

Last Modified

CVE description copyright © 2017, The MITRE Corporation


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