This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--===============8885007318487739780==
Content-Type: multipart/signed; micalg=pgp-sha512;
 protocol="application/pgp-signature";
 boundary="lMIBdusMRwDO59LMAT8SB9gPnn0Cb9ei3"

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--lMIBdusMRwDO59LMAT8SB9gPnn0Cb9ei3
Content-Type: multipart/mixed;
 boundary="JrEcVzmjq5rg4N7DKAlw3c5z8ZcaK13Em";
 protected-headers="v1"
From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <4daf0e21-bd21-3acb-3a96-8117abfab60a@canonical.com>
Subject: [USN-3877-1] LibVNCServer vulnerabilities

--JrEcVzmjq5rg4N7DKAlw3c5z8ZcaK13Em
Content-Type: text/plain; charset=utf-8
Content-Language: en-C
Content-Transfer-Encoding: quoted-printable

==========================================================================
Ubuntu Security Notice USN-3877-1
January 31, 2019

libvncserver vulnerabilities
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in LibVNCServer.

Software Description:
- libvncserver: vnc server library

Details:

It was discovered that LibVNCServer incorrectly handled certain operations.
A remote attacker able to connect to applications using LibVNCServer could
possibly use this issue to obtain sensitive information, cause a denial of
service, or execute arbitrary code.

Update instructions:

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

Ubuntu 18.10:
  libvncclient1                   0.9.11+dfsg-1.1ubuntu0.1
  libvncserver1                   0.9.11+dfsg-1.1ubuntu0.1

Ubuntu 18.04 LTS:
  libvncclient1                   0.9.11+dfsg-1ubuntu1.1
  libvncserver1                   0.9.11+dfsg-1ubuntu1.1

Ubuntu 16.04 LTS:
  libvncclient1                   0.9.10+dfsg-3ubuntu0.16.04.3
  libvncserver1                   0.9.10+dfsg-3ubuntu0.16.04.3

Ubuntu 14.04 LTS:
  libvncserver0                   0.9.9+dfsg-1ubuntu1.4

After a standard system update you need to restart LibVNCServer
applications to make all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3877-1
  CVE-2018-15126, CVE-2018-15127, CVE-2018-20019, CVE-2018-20020,
  CVE-2018-20021, CVE-2018-20022, CVE-2018-20023, CVE-2018-20024,
  CVE-2018-20748, CVE-2018-20749, CVE-2018-20750, CVE-2018-6307

Package Information:
  https://launchpad.net/ubuntu/+source/libvncserver/0.9.11+dfsg-1.1ubuntu0.1
  https://launchpad.net/ubuntu/+source/libvncserver/0.9.11+dfsg-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/libvncserver/0.9.10+dfsg-3ubuntu0.16.04.3
  https://launchpad.net/ubuntu/+source/libvncserver/0.9.9+dfsg-1ubuntu1.4


--JrEcVzmjq5rg4N7DKAlw3c5z8ZcaK13Em--

--lMIBdusMRwDO59LMAT8SB9gPnn0Cb9ei3
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=DSbu
-----END PGP SIGNATURE-----

--lMIBdusMRwDO59LMAT8SB9gPnn0Cb9ei3--


--===============8885007318487739780==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5
LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl
IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj
dXJpdHktYW5ub3VuY2UK

--===============8885007318487739780==--