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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1234
                     USN-4322-1: GnuTLS vulnerability
                               8 April 2020

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           GnuTLS
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
                   Reduced Security         -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-11501  

Reference:         ESB-2020.1211

Original Bulletin: 
   https://usn.ubuntu.com/4322-1/

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USN-4322-1: GnuTLS vulnerability
7 April 2020

gnutls28 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.10

Summary

GnuTLS could expose sensitive information over the network.

Software Description

  o gnutls28 - GNU TLS library

Details

It was discovered that GnuTLS incorrectly handled randomness when performing
DTLS negotiation. A remote attacker could possibly use this issue to obtain
sensitive information, contrary to expectations.

Update instructions

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

Ubuntu 19.10
    libgnutls30 - 3.6.9-5ubuntu1.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o CVE-2020-11501

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