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CVE-2016-5417

Published: 16 February 2017

Memory leak in the __res_vinit function in the IPv6 name server management code in libresolv in GNU C Library (aka glibc or libc6) before 2.24 allows remote attackers to cause a denial of service (memory consumption) by leveraging partial initialization of internal resolver data structures.

From the Ubuntu Security Team

Tim Ruehsen discovered that the getaddrinfo() implementation in the GNU C Library did not properly track memory allocations. An attacker could use this to cause a denial of service.

Notes

AuthorNote
sbeattie
introduced in 2.22 commit 2212c1420c92a33b0e0bd9a34938c9814a56c0f7
Priority

Low

CVSS 3 base score: 7.5

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
precise Not vulnerable
(pre 2.22)
trusty Not vulnerable
(pre 2.22)
upstream Not vulnerable
(pre 2.22)
wily Does not exist

xenial Does not exist

yakkety Does not exist

glibc
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream Needs triage

wily Not vulnerable
(pre 2.22)
xenial
Released (2.23-0ubuntu6)
yakkety Not vulnerable
(2.24-0ubuntu1)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5e7fdabd7df1fc6c56d104e61390bf5a6b526c38 (trunk)
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=317da342ba4417c30d985f5593d78bb1364a62c3 (2.23)