Vulnerability Description
The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Glibc | <= 2.25 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/100598
- https://access.redhat.com/errata/RHSA-2018:0805
- https://arxiv.org/pdf/1205.4011.pdfTechnical DescriptionThird Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=21361Issue TrackingPatchThird Party Advisory
- http://www.securityfocus.com/bid/100598
- https://access.redhat.com/errata/RHSA-2018:0805
- https://arxiv.org/pdf/1205.4011.pdfTechnical DescriptionThird Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=21361Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2017-12132?
CVE-2017-12132 is a vulnerability with a CVSS score of 5.9 (MEDIUM). The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path ...
How severe is CVE-2017-12132?
CVE-2017-12132 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-12132?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Glibc.