Operating System:

[Ubuntu]

Published:

12 February 2020

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0481
                    USN-4277-1: libexif vulnerabilities
                             12 February 2020

===========================================================================

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

Product:           libexif
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-2019-9278 CVE-2017-7544 CVE-2016-6328

Reference:         ASB-2019.0248
                   ESB-2020.0468
                   ESB-2020.0445

Original Bulletin: 
   https://usn.ubuntu.com/4277-1/

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USN-4277-1: libexif vulnerabilities
11 February 2020

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

  o Ubuntu 19.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS
  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

Several security issues were fixed in libexif.

Software Description

  o libexif - library to parse EXIF files

Details

Liu Bingchang discovered that libexif incorrectly handled certain files. An
attacker could possibly use this issue to access sensitive information or cause
a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04
ESM and Ubuntu 16.04 LTS. (CVE-2016-6328)

Lili Xu and Bingchang Liu discovered that libexif incorrectly handled certain
files. An attacker could possibly use this issue to access sensitive
information or cause a denial of service. This issue only affected Ubuntu 12.04
ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS. (CVE-2017-7544)

It was discovered that libexif incorrectly handled certain files. An attacker
could possibly use this issue to execute arbitrary code. (CVE-2019-9278)

Update instructions

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

Ubuntu 19.10
    libexif12 - 0.6.21-5.1ubuntu0.1
Ubuntu 18.04 LTS
    libexif12 - 0.6.21-4ubuntu0.1
Ubuntu 16.04 LTS
    libexif12 - 0.6.21-2ubuntu0.1
Ubuntu 14.04 ESM
    libexif12 - 0.6.21-1ubuntu1+esm1
Ubuntu 12.04 ESM
    libexif12 - 0.6.20-2ubuntu0.2

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

After a standard system update you need to restart your session to effect the
necessary changes.

References

  o CVE-2016-6328
  o CVE-2017-7544
  o CVE-2019-9278

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