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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0143
                          libcaca vulnerabilities
                              16 January 2019

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

Product:           libcaca
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-20549 CVE-2018-20548 CVE-2018-20547
                   CVE-2018-20546 CVE-2018-20545 CVE-2018-20544
                   CVE-2018-20459  

Reference:         ESB-2019.0079

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3860-1
   http://www.ubuntu.com/usn/usn-3860-2

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

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-3860-1: libcaca vulnerabilities

15 January 2019

libcaca 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 libcaca.

Software Description

    libcaca - text mode graphics utilities

Details

It was discovered that libcaca incorrectly handled certain images. An attacker
could possibly use this issue to cause a denial of service. (CVE-2018-20544)

It was discovered that libcaca incorrectly handled certain images. An attacker
could possibly use this issue to execute arbitrary code. (CVE-2018-20545, 
CVE-2018-20548, CVE-2018-20459)

It was discovered that libcaca incorrectly handled certain images. An attacker
could possibly use this issue to access sensitive information. (CVE-2018-20546,
CVE-2018-20547)

Update instructions

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

Ubuntu 18.10
    caca-utils - 0.99.beta19-2ubuntu0.18.10.1
    libcaca0 - 0.99.beta19-2ubuntu0.18.10.1
Ubuntu 18.04 LTS
    caca-utils - 0.99.beta19-2ubuntu0.18.04.1
    libcaca0 - 0.99.beta19-2ubuntu0.18.04.1
Ubuntu 16.04 LTS
    caca-utils - 0.99.beta19-2ubuntu0.16.04.1
    libcaca0 - 0.99.beta19-2ubuntu0.16.04.1
Ubuntu 14.04 LTS
    caca-utils - 0.99.beta18-1ubuntu5.1
    libcaca0 - 0.99.beta18-1ubuntu5.1

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

    CVE-2018-20544
    CVE-2018-20545
    CVE-2018-20546
    CVE-2018-20547
    CVE-2018-20548
    CVE-2018-20549

- ---

USN-3860-2: libcaca vulnerabilities

15 January 2019

libcaca vulnerabilities

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

    Ubuntu 12.04 ESM

Summary

Several security issues were fixed in libcaca.

Software Description

    libcaca - text mode graphics utilities

Details

USN-3860-1 fixed a vulnerability in libcaca. This update provides the 
corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that libcaca incorrectly handled certain images. An attacker
could possibly use this issue to cause a denial of service. (CVE-2018-20544)

It was discovered that libcaca incorrectly handled certain images. An attacker
could possibly use this issue to execute arbitrary code. (CVE-2018-20545,
CVE-2018-20548, CVE-2018-20459)

It was discovered that libcaca incorrectly handled certain images. An attacker
could possibly use this issue to access sensitive information. (CVE-2018-20546,
CVE-2018-20547)

Update instructions

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

Ubuntu 12.04 ESM
    caca-utils - 0.99.beta17-2.1ubuntu2.1
    libcaca0 - 0.99.beta17-2.1ubuntu2.1

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

    USN-3860-1
    CVE-2018-20544
    CVE-2018-20545
    CVE-2018-20546
    CVE-2018-20547
    CVE-2018-20548
    CVE-2018-20549

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