--===============6012771826261384140==
Content-Type: multipart/signed; micalg="pgp-sha256";
	protocol="application/pgp-signature";
 boundary="=-UBJEfflvb47q45uA/F6w"


--=-UBJEfflvb47q45uA/F6w
Content-Type: text/plain; charset="UTF-8
Content-Transfer-Encoding: quoted-printable

==========================================================================
Ubuntu Security Notice USN-3430-3
January 04, 2018

dnsmasq regression
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

USN-3430-2 introduced regression in Dnsmasq.

Software Description:
- dnsmasq: Small caching DNS proxy and DHCP/TFTP server

Details:

USN-3430-2 fixed several vulnerabilities. The update introduced a new
regression that breaks DNS resolution. This update addresses the
problem.

We apologize for the inconvenience.

Original advisory details:

 Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
 discovered that Dnsmasq incorrectly handled DNS requests. A remote
 attacker could use this issue to cause Dnsmasq to crash, resulting in
 a denial of service, or possibly execute arbitrary code. 
 (CVE-2017-14491)
 
 Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
 discovered that Dnsmasq incorrectly handled IPv6 router
 advertisements. A remote attacker could use this issue to cause
 Dnsmasq to crash, resulting in a denial of service, or possibly
 execute arbitrary code. (CVE-2017-14492)
 
 Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
 discovered that Dnsmasq incorrectly handled DHCPv6 requests. A remote
 attacker could use this issue to cause Dnsmasq to crash, resulting in
 a denial of service, or possibly execute arbitrary code. 
 (CVE-2017-14493)
 
 Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
 discovered that Dnsmasq incorrectly handled DHCPv6 packets. A remote
 attacker could use this issue to possibly obtain sensitive memory
 contents. (CVE-2017-14494)
 
 Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
 discovered that Dnsmasq incorrectly handled DNS requests. A remote
 attacker could use this issue to cause Dnsmasq to consume memory,
 resulting in a denial of service. (CVE-2017-14495)
 
 Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher
 discovered that Dnsmasq incorrectly handled DNS requests. A remote
 attacker could use this issue to cause Dnsmasq to crash, resulting in
 a denial of service. (CVE-2017-14496)

Update instructions:

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

Ubuntu 12.04 ESM:
  dnsmasq                         2.59-4ubuntu0.4
  dnsmasq-base                    2.59-4ubuntu0.4
  dnsmasq-utils                   2.59-4ubuntu0.4

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3430-3
  https://www.ubuntu.com/usn/usn-3430-1
  https://launchpad.net/bugs/1741262

--=-UBJEfflvb47q45uA/F6w
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: This is a digitally signed message part
Content-Transfer-Encoding: 7bit

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=cXbj
-----END PGP SIGNATURE-----

--=-UBJEfflvb47q45uA/F6w--



--===============6012771826261384140==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5
LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl
IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj
dXJpdHktYW5ub3VuY2UK

--===============6012771826261384140==--