CVE-2017-12132

medium

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.

References

Advisories
More

https://sourceware.org/bugzilla/show_bug.cgi?id=21361

https://arxiv.org/pdf/1205.4011.pdf

https://access.redhat.com/errata/RHSA-2018:0805

http://www.securityfocus.com/bid/100598

Details

Source: Mitre, NVD

Published: 2017-08-01

Updated: 2025-04-20

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N