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Vulnerability record · CVE-2013-7423 · published 24 February 2015

CVE-2013-7423: Redhat enterprise linux server aus vulnerability

Redhat · Enterprise Linux Server Aus

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.

5.0 CVSS 2.0 Medium EPSS 5.8% · top 7.1% CWE-17 · CWE-17
5.0CVSS 2.0 base score
5.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
22References
17 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html Third 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/2015/01/28/20 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/72844 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-2519-1 Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1207 Third Party Advisory
https://github.com/golang/go/issues/6336 Third Party Advisory
https://security.gentoo.org/glsa/201602-02 Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=15946 Issue Tracking
http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html Third 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/2015/01/28/20 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/72844 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-2519-1 Third Party Advisory
https://access.redhat.com/errata/RHSA-2016:1207 Third Party Advisory
https://github.com/golang/go/issues/6336 Third Party Advisory
https://security.gentoo.org/glsa/201602-02 Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=15946 Issue Tracking

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Source: NIST National Vulnerability Database (record CVE-2013-7423), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.