CVE-2014-3517

Advisory

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.


MLIST:[oss-security] 20140717 [OSSA 2014-024] Use of non-constant time comparison operation (CVE-2014-3517): http://www.openwall.com/lists/oss-security/2014/07/17/2
CONFIRM:https://bugs.launchpad.net/nova/+bug/1325128: https://bugs.launchpad.net/nova/+bug/1325128

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3517
• https://bugs.launchpad.net/nova/+bug/1325128
• http://www.openwall.com/lists/oss-security/2014/07/17/2