CVE-2015-3636 – ipv4 use-after-free

Medium

Vendor

Ubuntu

Versions Affected

• Ubuntu 14.04

Description

A use-after-free flaw was discovered in the Linux kernel’s ipv4 ping support. A local user could exploit this flaw to gain administrative privileges on the system.

The Cloud Foundry project is releasing a BOSH stemcell version 2983 that has the patched version of ipv4.

Affected Products and Versions

_Severity is medium unless otherwise noted.
_

• All versions of Cloud Foundry BOSH stemcells prior to 2983 and prior have versions of the kernel vulnerable to CVE-2015-3636

Mitigation

Users of affected versions should apply the following mitigation:

• The Cloud Foundry project recommends that Cloud Foundry Runtime Deployments run with BOSH stemcells 2983 or later when they are available, which contain the patched version of ipv4 that resolves CVE-2015-3636.

Credit

Wen Xu

References

• <http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-3636.html&gt;
• <https://bosh.io/stemcells&gt;
• <https://github.com/cloudfoundry/cf-release&gt;