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CVE-2014-9761

Published: 19 April 2016

Multiple stack-based buffer overflows in the GNU C Library (aka glibc or libc6) before 2.23 allow context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long argument to the (1) nan, (2) nanf, or (3) nanl function.

From the Ubuntu security team

Joseph Myers discovered that the GNU C Library did not properly handle long arguments to functions returning a representation of Not a Number (NaN). An attacker could use this to cause a denial of service (stack exhaustion leading to an application crash) or possibly execute arbitrary code.

Notes

AuthorNote
tyhicks
USN-2985-1 initially fixed this issue but it caused a regression and
the change was backed out by USN-2985-2. This issue will be fixed in a future
update.
Priority

Low

CVSS 3 base score: 9.8

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Ignored
(end of ESM support, was needed)
trusty Needed

upstream Needed

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

glibc
Launchpad, Ubuntu, Debian
artful Not vulnerable
(2.23-0ubuntu1)
bionic Not vulnerable
(2.23-0ubuntu1)
cosmic Not vulnerable
(2.23-0ubuntu1)
disco Not vulnerable
(2.23-0ubuntu1)
eoan Not vulnerable
(2.23-0ubuntu1)
focal Not vulnerable
(2.23-0ubuntu1)
groovy Not vulnerable
(2.23-0ubuntu1)
hirsute Not vulnerable
(2.23-0ubuntu1)
impish Not vulnerable
(2.23-0ubuntu1)
jammy Not vulnerable
(2.23-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream Needed

vivid Ignored
(reached end-of-life)
wily Ignored
(reached end-of-life)
xenial Not vulnerable
(2.23-0ubuntu1)
yakkety Not vulnerable
(2.23-0ubuntu1)
zesty Not vulnerable
(2.23-0ubuntu1)
Patches:
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e02cabecf0d025ec4f4ddee290bdf7aadb873bb3
upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f5e8b01a1da2a207228f2072c934fa5918554b8