USN-3090-2: Pillow regresssion

Releases

• Ubuntu 14.04 ESM

Packages

• 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 versions:

Ubuntu 14.04

• python-imaging - 2.3.0-1ubuntu3.3
• python-pil - 2.3.0-1ubuntu3.3
• python3-imaging - 2.3.0-1ubuntu3.3
• python3-pil - 2.3.0-1ubuntu3.3

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

References

• CVE-2014-9601
• https://launchpad.net/bugs/1628351

Related notices

• USN-3090-1
• USN-3229-1
• USN-3230-1