USN-2834-1 libxml2 vulnerability

Medium

Vendor

libxml2

Versions Affected

• Ubuntu 14.04

Description

Kostya Serebryany discovered that libxml2 incorrectly handled certain malformed documents. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause libxml2 to crash, resulting in a denial of service. (CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499,CVE-2015-7500)

Hugh Davenport discovered that libxml2 incorrectly handled certain malformed documents. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause libxml2 to crash, resulting in a denial of service. (CVE-2015-8241, CVE-2015-8242)

Hanno Boeck discovered that libxml2 incorrectly handled certain malformed documents. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause libxml2 to crash, resulting in a denial of service. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-8317)

The Cloud Foundry project released a BOSH stemcell version 3146.1 and 3155 that has the patched version of the Linux kernel. A new Cloud Foundry rootfs was also released, cflinuxfs2 v.1.22.0, that has the patches.

Affected Products and Versions

_Severity is medium unless otherwise noted.
_

• All versions of Cloud Foundry BOSH stemcells prior to 3155 are vulnerable, besides patched versions of 3146.x.
• All versions of Cloud Foundry cflinuxfs2 prior to v.1.22.0.

Mitigation

Users of affected versions should apply the following mitigation:

• The Cloud Foundry project recommends that Cloud Foundry deployments run with BOSH stemcells 3155 or later versions, or patched 3146.x versions, and cflinuxfs2 v.1.22.0 or later versions.

Credit

Kostya Serebryany, Hugh Davenport, Hanno Boeck

References

• <http://www.ubuntu.com/usn/usn-2834-1&gt;
• <https://bosh.io/stemcells&gt;
• <https://github.com/cloudfoundry/cf-release&gt;