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Ubuntu 15.10 USN-2951-1 Critical: OptiPNG Memory Exploits

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Calendar Grey April 18, 2016
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The security flaws in OptiPNG enable malicious actors to trigger crashes or run unauthorized code through specially designed image files.
OptiPNG could be made to crash or run programs as your login if it opened a specially crafted file.

Summary

OptiPNG could be made to crash or run programs as your login if it opened a

specially crafted file.

Software Description:

- optipng: advanced PNG (Portable Network Graphics) optimizer

Details:

Gustavo Grieco discovered that OptiPNG incorrectly handled memory. A remote

attacker could use this issue with a specially crafted image file to cause

OptiPNG to crash, resulting in a denial of service. (CVE-2015-7801)

Gustavo Grieco discovered that OptiPNG incorrectly handled memory. A remote

attacker could use this issue with a specially crafted image file to cause

OptiPNG to crash, resulting in a denial of service. (CVE-2015-7802)

Hans Jerry Illikainen discovered that OptiPNG incorrectly handled memory. A

remote attacker could use this issue with a specially crafted image file to

cause OptiPNG to crash, resulting in a denial of service, or possibly

execute arbitrary code. (CVE-2016-2191)

Henri Salo discovered that OptiPNG incorrectly handled memory. A remote

at...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical remote attack memory issue ubuntu optipng

Update Instructions

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

Ubuntu 15.10:
  optipng                         0.7.5-1ubuntu0.1

Ubuntu 14.04 LTS:
  optipng                         0.6.4-1ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  optipng                         0.6.4-1ubuntu0.12.04.1

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

References

https://ubuntu.com/security/notices/USN-2951-1

CVE-2015-7801, CVE-2015-7802, CVE-2016-2191, CVE-2016-3981,

CVE-2016-3982

Severity
critical
Lowest
Low
Medium
High
Critical

April 18, 2016

Topics%20covered

Topics Covered

security advisory denial of service critical remote attack memory issue ubuntu optipng

Package Information

https://launchpad.net/ubuntu/+source/optipng/0.7.5-1ubuntu0.1
https://launchpad.net/ubuntu/+source/optipng/0.6.4-1ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/optipng/0.6.4-1ubuntu0.12.04.1

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