CVE Vulnerabilities

CVE-2015-5695

Uncontrolled Resource Consumption

Published: Aug 31, 2017 | Modified: Apr 20, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
3.5 LOW
AV:N/AC:M/Au:S/C:N/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM

Designate 2015.1.0 through 1.0.0.0b1 as packaged in OpenStack Kilo does not enforce RecordSets per domain, and Records per RecordSet quotas when processing an internal zone file transfer, which might allow remote attackers to cause a denial of service (infinite loop) via a crafted resource record set.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Name Vendor Start Version End Version
Designate Openstack 1.0.0.0b1 (including) 1.0.0.0b1 (including)
Designate Openstack 1.0.0a0 (including) 1.0.0a0 (including)
Designate Openstack 2015.1.0 (including) 2015.1.0 (including)
Designate Ubuntu upstream *
Designate Ubuntu vivid *
Designate Ubuntu wily *
Designate Ubuntu yakkety *

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References