CVE-2017-12132

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.26%
Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://arxiv.org/pdf/1205.4011.pdf third party advisory technical description
http://www.securityfocus.com/bid/100598 vdb entry
https://sourceware.org/bugzilla/show_bug.cgi?id=21361 issue tracking third party advisory patch
https://access.redhat.com/errata/RHSA-2018:0805 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-12132?
CVE-2017-12132 has been scored as a medium severity vulnerability.
How to fix CVE-2017-12132?
To fix CVE-2017-12132, 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-2017-12132 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12132 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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