Public Date:
1187109: CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descriptors under high load
It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data.

Find out more about CVE-2013-7423 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of glibc as shipped with Red Hat Enterprise Linux 5 as they did not include the vulnerable code, which was introduced in later versions.

CVSS v2 metrics

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

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-2015:2199 2015-11-19
Red Hat Enterprise Linux Extended Update Support 7.1 (glibc) RHSA-2015:2589 2015-12-09
Red Hat Enterprise Linux Advanced Update Support 6.5 (glibc) RHSA-2016:1207 2016-06-07
Red Hat Enterprise Linux 6 (glibc) RHSA-2015:0863 2015-04-21

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 glibc Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.
Last Modified