CVE-2013-7423

Name: CVE-2013-7423
Creator: NVD / NIST
Published: 2015-02-24T15:59:00.05+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.81%

Last modified Jun 17, 2026

CVE-2013-7423 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.81% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

5.81%

92.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-17

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux Server Aus	6.5
Canonical	Ubuntu Linux	10.04
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	14.10
Opensuse	Opensuse	13.1
Opensuse	Opensuse	13.2
Gnu	Glibc	< 2.20

References

http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.htmlThird Party Advisory
http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html
http://rhn.redhat.com/errata/RHSA-2015-0863.html
http://seclists.org/fulldisclosure/2021/Sep/0
http://www.openwall.com/lists/oss-security/2015/01/28/20Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/72844Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2519-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1207Third Party Advisory
https://github.com/golang/go/issues/6336Third Party Advisory
https://security.gentoo.org/glsa/201602-02Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=15946Issue Tracking
http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.htmlThird Party Advisory
http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html
http://rhn.redhat.com/errata/RHSA-2015-0863.html
http://seclists.org/fulldisclosure/2021/Sep/0
http://www.openwall.com/lists/oss-security/2015/01/28/20Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/72844Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2519-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1207Third Party Advisory
https://github.com/golang/go/issues/6336Third Party Advisory
https://security.gentoo.org/glsa/201602-02Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=15946Issue Tracking

Timeline

Published: Feb 24, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-7423?

How severe is CVE-2013-7423?

Severity scoring for CVE-2013-7423 is pending analysis. The EPSS model estimates a 5.81% probability of exploitation in the next 30 days.

How do I fix CVE-2013-7423?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-7423?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST