// For flags

CVE-2013-1838

Nova: DoS by allocating all Fixed IPs

Severity Score

6.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) does not properly implement a quota for fixed IPs, which allows remote authenticated users to cause a denial of service (resource exhaustion and failure to spawn new instances) via a large number of calls to the addFixedIp function.

OpenStack Compute (Nova) Grizzly, Folsom (versión 2012.2) y Essex (versión 2012.1) no implementan apropiadamente una cuota para direcciones IP fijas, lo que permite a los usuarios autenticados remotos causar una denegación de servicio (agotamiento de recursos y fallo para crear nuevas instancias) por medio de un gran número de llamadas a la función addFixedIp.

Loganathan Parthipan discovered that Nova did not properly validate VNC tokens after an instance was deleted. An authenticated attacker could exploit this to access other virtual machines under certain circumstances. This issue did not affect Ubuntu 11.10. Vish Ishaya discovered that Nova did not always enforce quotas on fixed IPs. An authenticated attacker could exploit this to cause a denial of service via resource consumption. Nova will now enforce a quota limit of 10 fixed IPs per instance, which is configurable via 'quota_fixed_ips' in /etc/nova/nova.conf. Various other issues were also addressed.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2013-02-19 CVE Reserved
  • 2013-03-21 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-399: Resource Management Errors
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openstack
Search vendor "Openstack"
 Essex
Search vendor "Openstack" for product "Essex"
 2012.1
Search vendor "Openstack" for product "Essex" and version "2012.1"
-
Affected
Openstack
Search vendor "Openstack"
 Folsom
Search vendor "Openstack" for product "Folsom"
 2012.2
Search vendor "Openstack" for product "Folsom" and version "2012.2"
-
Affected
Openstack
Search vendor "Openstack"
 Grizzly
Search vendor "Openstack" for product "Grizzly"
 2012.2
Search vendor "Openstack" for product "Grizzly" and version "2012.2"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 11.10
Search vendor "Canonical" for product "Ubuntu Linux" and version "11.10"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 12.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"
lts
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 12.10
Search vendor "Canonical" for product "Ubuntu Linux" and version "12.10"
-
Affected