USN-2951-1: OptiPNG vulnerabilities

Releases

• Ubuntu 15.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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
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-2016-3981)

Henri Salo 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-2016-3982)

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

• optipng - 0.6.4-1ubuntu0.14.04.1

Ubuntu 12.04

• optipng - 0.6.4-1ubuntu0.12.04.1

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

References

• CVE-2015-7801
• CVE-2015-7802
• CVE-2016-2191
• CVE-2016-3981
• CVE-2016-3982