CVE-2013-7423

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.95% Top 25%
Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/golang/go/issues/6336 third party advisory
http://www.openwall.com/lists/oss-security/2015/01/28/20 third party advisory mailing list
http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html third party advisory vendor advisory
https://security.gentoo.org/glsa/201602-02 third party advisory vendor advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=15946 issue tracking
http://www.ubuntu.com/usn/USN-2519-1 third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-0863.html vendor advisory
http://www.securityfocus.com/bid/72844 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2016:1207 third party advisory vendor advisory
http://seclists.org/fulldisclosure/2021/Sep/0 mailing list
http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html

Frequently Asked Questions

What is the severity of CVE-2013-7423?
CVE-2013-7423 has been scored as a medium severity vulnerability.
How to fix CVE-2013-7423?
To fix CVE-2013-7423, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-7423 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2013-7423 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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