CVE-2017-12132

MEDIUM

GNU C Library <2.26 - DoS

Title source: llm

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 (4)

Scores

CVSS v3 5.9
EPSS 0.0026
EPSS Percentile 49.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-770
Status published
Products (2)
gnu/glibc < 2.25
n/a/n/a
Published Aug 01, 2017
Tracked Since Feb 18, 2026