CVE-2017-12132

Published: 01 August 2017

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.

Priority

Low

CVSS 3 base score: 5.9

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.10 (Groovy Gorilla) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Needed

glibc
Launchpad, Ubuntu, Debian
Upstream
Released (2.26)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(2.26-0ubuntu2)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(2.26-0ubuntu2)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(2.26-0ubuntu2)
Ubuntu 16.04 LTS (Xenial Xerus) Needed

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Patches:
Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e14a27723cc3a154d67f3f26e719d08c0ba9ad25 (master)
Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=47db584c74e2bbcf1ba55e62d949c1a738da5e0a (2.25)