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.

Priority

Low

CVSS 3 base score: 9.8

Status

Package Release Status
eglibc
Launchpad, Ubuntu, Debian 		Upstream Needed

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 Needed

Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(2.23-0ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(2.23-0ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(2.23-0ubuntu1)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(2.23-0ubuntu1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

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

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.

References

Bugs

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