This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--===============3280697358018528022==
Content-Type: multipart/signed; micalg=pgp-sha256;
 protocol="application/pgp-signature";
 boundary="EtzaCu3YHJZx6l53KIYIPf8MGTPcaRfaD"

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--EtzaCu3YHJZx6l53KIYIPf8MGTPcaRfaD
Content-Type: multipart/mixed;
 boundary="N4jQj32vt8qR6ngsuKHlGWFALywoFmDBV";
 protected-headers="v1"
From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
 <ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <d9f5529e-ad8f-f629-a4da-4cb29854fad0@canonical.com>
Subject: [USN-4891-1] OpenSSL vulnerability

--N4jQj32vt8qR6ngsuKHlGWFALywoFmDBV
Content-Type: text/plain; charset=utf-8
Content-Language: en-C
Content-Transfer-Encoding: quoted-printable

==========================================================================
Ubuntu Security Notice USN-4891-1
March 25, 2021

openssl vulnerability
==========================================================================

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

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

OpenSSL could be made to crash or run programs if it received specially
crafted network traffic.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

It was discovered that OpenSSL incorrectly handled certain renegotiation
ClientHello messages. A remote attacker could use this issue to cause
OpenSSL to crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions:

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

Ubuntu 20.10:
  libssl1.1                       1.1.1f-1ubuntu4.3

Ubuntu 20.04 LTS:
  libssl1.1                       1.1.1f-1ubuntu2.3

Ubuntu 18.04 LTS:
  libssl1.1                       1.1.1-1ubuntu2.1~18.04.9

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

References:
  https://ubuntu.com/security/notices/USN-4891-1
  CVE-2021-3449

Package Information:
  https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu4.3
  https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu2.3
  https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1~18.04.9


--N4jQj32vt8qR6ngsuKHlGWFALywoFmDBV--

--EtzaCu3YHJZx6l53KIYIPf8MGTPcaRfaD
Content-Type: application/pgp-signature; name="OpenPGP_signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="OpenPGP_signature"

-----BEGIN PGP SIGNATURE-----
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=bEOg
-----END PGP SIGNATURE-----

--EtzaCu3YHJZx6l53KIYIPf8MGTPcaRfaD--


--===============3280697358018528022==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5
LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl
IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj
dXJpdHktYW5ub3VuY2UK

--===============3280697358018528022==--