Ubuntu Security Notice USN-3090-2

30th September, 2016

Pillow regression

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

• Ubuntu 14.04 LTS

Software description

• pillow
  – Python Imaging Library compatibility layer

Details

USN-3090-1 fixed vulnerabilities in Pillow. The patch to fix CVE-2014-9601
caused a regression which resulted in failures when processing certain
png images. This update temporarily reverts the security fix for CVE-2014-9601
pending further investigation.

We apologize for the inconvenience.

Original advisory details:

It was discovered that a flaw in processing a compressed text chunk in
a PNG image could cause the image to have a large size when decompressed,
potentially leading to a denial of service. (CVE-2014-9601)

Andrew Drake discovered that Pillow incorrectly validated input. A remote
attacker could use this to cause Pillow to crash, resulting in a denial
of service. (CVE-2014-3589)

Eric Soroos discovered that Pillow incorrectly handled certain malformed
FLI, Tiff, and PhotoCD files. A remote attacker could use this issue to
cause Pillow to crash, resulting in a denial of service.
(CVE-2016-0740, CVE-2016-0775, CVE-2016-2533)

Update instructions

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

Ubuntu 14.04 LTS:

python-imaging

2.3.0-1ubuntu3.3

python3-pil

2.3.0-1ubuntu3.3

python-pil

2.3.0-1ubuntu3.3

python3-imaging

2.3.0-1ubuntu3.3

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

None

References

CVE-2014-9601,

LP: 1628351