CVE-2013-7423

Medium

Description

The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.

SeverityMedium

CVSS5.0

Exploit probability—

Product

Gnu Glibc

PublishedFeb 24, 2015

First seenFeb 24, 2015

How to fix

Update

gnu glibc2.20 or later

Vendor advisories

security.gentoo.org/glsa/201602-02
access.redhat.com/errata/RHSA-2016:1207

Affected products

Product	Affected versions	Fixed in
gnu glibc	v < 2.20	2.20
redhat enterprise_linux_server_aus	6.5	—
canonical ubuntu_linux	10.04, 12.04, 14.04, 14.10	—
opensuse opensuse	13.1, 13.2	—

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