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             AUSCERT External Security Bulletin Redistribution

                              ESB-2020.3456.2
                      USN-4572-1: Spice vulnerability
                              8 October 2020

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

Product:           spice
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-14355  

Reference:         ESB-2020.3455

Original Bulletin: 
   https://usn.ubuntu.com/4572-1/
   https://usn.ubuntu.com/4572-2/

Comment: This bulletin contains two (2) Ubuntu security advisories.

Revision History:  October 8 2020: Additional release affected, Ubuntu 14.04 ESM.
                   October 7 2020: Initial Release

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USN-4572-1: Spice vulnerability
06 October 2020

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

  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Packages

  o spice - SPICE protocol client and server library

Details

Frediano Ziglio discovered that Spice incorrectly handled QUIC image
decoding. A remote attacker could use this to cause Spice 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 20.04

  o libspice-server1 - 0.14.2-4ubuntu3.1

Ubuntu 18.04

  o libspice-server1 - 0.14.0-1ubuntu2.5

Ubuntu 16.04

  o libspice-server1 - 0.12.6-4ubuntu0.5

After a standard system update you need to restart qemu guests to make all
the necessary changes.

References

  o CVE-2020-14355

- ------------------------------------------------------------------------------

USN-4572-2: Spice vulnerability
07 October 2020

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

  o Ubuntu 14.04 ESM

Packages

  o spice - SPICE protocol client and server library

Details

USN-4572-1 fixed a vulnerability in Spice. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Frediano Ziglio discovered that Spice incorrectly handled QUIC image
decoding. A remote attacker could use this to cause Spice 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 14.04

  o libspice-server1 - 0.12.4-0nocelt2ubuntu1.8+esm1

After a standard system update you need to restart qemu guests to make all
the necessary changes.

References

  o CVE-2020-14355

Related notices

  o USN-4572-1 : spice, libspice-server1

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