--===============3652579508213282372==
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature";
 boundary="envbJBWh7q8WU6mo"
Content-Disposition: inline


--envbJBWh7q8WU6mo
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inlin
Content-Transfer-Encoding: quoted-printable

==========================================================================
Ubuntu Security Notice USN-3276-2
May 17, 2017

shadow regression
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

USN-3276-1 introduced a regression in su.

Software Description:
- shadow: system login tools

Details:

USN-3276-1 intended to fix a vulnerability in su. The solution introduced
a regression in su signal handling. This update modifies the security fix.
We apologize for the inconvenience.

Original advisory details:

 Sebastian Krahmer discovered integer overflows in shadow utilities.
 A local attacker could possibly cause them to crash or potentially
 gain privileges via crafted input. (CVE-2016-6252)

 Tobias Stöckmann discovered a race condition in su. A local
 attacker could cause su to send SIGKILL to other processes with
 root privileges. (CVE-2017-2616)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.04:
  login                           1:4.2-3.2ubuntu1.17.04.2
  passwd                          1:4.2-3.2ubuntu1.17.04.2
  uidmap                          1:4.2-3.2ubuntu1.17.04.2

Ubuntu 16.10:
  login                           1:4.2-3.2ubuntu1.16.10.2
  passwd                          1:4.2-3.2ubuntu1.16.10.2
  uidmap                          1:4.2-3.2ubuntu1.16.10.2

Ubuntu 16.04 LTS:
  login                           1:4.2-3.1ubuntu5.3
  passwd                          1:4.2-3.1ubuntu5.3
  uidmap                          1:4.2-3.1ubuntu5.3

Ubuntu 14.04 LTS:
  login                           1:4.1.5.1-1ubuntu9.5
  passwd                          1:4.1.5.1-1ubuntu9.5
  uidmap                          1:4.1.5.1-1ubuntu9.5

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-3276-2
  http://www.ubuntu.com/usn/usn-3276-1
  https://launchpad.net/bugs/1690820

Package Information:
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.2ubuntu1.17.04.2
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.2ubuntu1.16.10.2
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.1ubuntu5.3
  https://launchpad.net/ubuntu/+source/shadow/1:4.1.5.1-1ubuntu9.5


--envbJBWh7q8WU6mo
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iQEcBAEBCgAGBQJZG67yAAoJEPMhclmdjS6XDPUH/1bbswSGnQjWMjMlbva32OWu
49evBEreaKmoRytqc998A3LJSRkJPwAb0hwcUoOk0aS7j1SOQMhu8WBEl7jICCgQ
HBKMlczu2zfd8a4YRAY4cBjEnKQIKI3rukp37vNsPgFXaVepC3NfNYiPHtjn9TyC
pxUHP27HKMCxprVHZO7LRe8DvqIbGce/dFHBi7TyfocZrzqsAKHr/Q3l1Uejj4WC
PWABbYnJ/piQJEuaimORefpB3rU26efZ6mNrmxkOcqgMzGm3Ql8adwzHGgWupMxo
9s69w2nBw0espzXLkblzfUV1wN1Eil5xLsSfsXlOOjdOi8bw1BoCVkJnBRdePfI=
=dU26
-----END PGP SIGNATURE-----

--envbJBWh7q8WU6mo--


--===============3652579508213282372==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

-- 
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce

--===============3652579508213282372==--