USN-2861-1 libpng vulnerability

Medium

Vendor

libpng

Versions Affected

• Ubuntu 14.04

Description

It was discovered that libpng incorrectly handled certain small bit-depth values. If a user or automated system using libpng were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service or execute code with the privileges of the user invoking the program. (CVE-2015-8472)

Qixue Xiao and Chen Yu discovered that libpng incorrectly handled certain malformed images. If a user or automated system using libpng were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service. (CVE-2015-8540)

The Cloud Foundry project released a BOSH stemcell version 3146.3 that has the patched version of the Linux kernel. A new Cloud Foundry rootfs was also released, cflinuxfs2 v.1.25.0, that has the patches.

Affected Products and Versions

_Severity is medium unless otherwise noted.
_

• All versions of Cloud Foundry BOSH stemcells prior to 3146.3 are vulnerable.
• All versions of Cloud Foundry cflinuxfs2 prior to v.1.25.0.

Mitigation

Users of affected versions should apply the following mitigation:

• The Cloud Foundry project recommends that Cloud Foundry deployments run with BOSH stemcells 3146.3 or later versions and cflinuxfs2 v.1.25.0 or later versions.

Credit

Qixue Xiao and Chen Yu

References

• <http://www.ubuntu.com/usn/usn-2861-1&gt;
• <https://bosh.io/stemcells&gt;
• <https://github.com/cloudfoundry/cf-release&gt;