Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Enterprise Linux Server Aus | 6.5 |
| Canonical | Ubuntu Linux | 10.04 |
| Opensuse | Opensuse | 13.1 |
| Gnu | Glibc | < 2.20 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.htmlThird Party Advisory
- http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Sc
- 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 ListThird Party Advisory
- http://www.securityfocus.com/bid/72844Third Party AdvisoryVDB 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-Sc
- http://rhn.redhat.com/errata/RHSA-2015-0863.html
- http://seclists.org/fulldisclosure/2021/Sep/0
FAQ
What is CVE-2013-7423?
CVE-2013-7423 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 lo...
How severe is CVE-2013-7423?
CVE-2013-7423 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2013-7423?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Enterprise Linux Server Aus, Canonical Ubuntu Linux, Opensuse Opensuse, Gnu Glibc.