CVE-2013-4179

OpenStack: Nova XML entities DoS

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The security group extension in OpenStack Compute (Nova) Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to cause a denial of service (resource consumption and crash) via an XML Entity Expansion (XEE) attack. NOTE: this issue is due to an incomplete fix for CVE-2013-1664.

La extensión de grupos de seguridad en OpenStack Compute (Nova) Grizzly 2013.1.3, Havana anteriores a havana-3, y anteriores, permite a atacantes remotos causar una denegación de servicio (consumo de recursos y caída) a través de un ataque XML Entity Expansion (XEE). NOTA: este problema es debido a una solución incompleta para CVE-2013-1664.

It was discovered that Nova did not properly enforce the is_public property when determining flavor access. An authenticated attacker could exploit this to obtain sensitive information in private flavors. This issue only affected Ubuntu 12.10 and 13.10. Grant Murphy discovered that Nova would allow XML entity processing. A remote unauthenticated attacker could exploit this using the Nova API to cause a denial of service via resource exhaustion. This issue only affected Ubuntu 13.10. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-06-12 CVE Reserved
2013-09-04 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2025-04-03 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC
https://bugs.launchpad.net/ossa/+bug/1190229	2024-08-06

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2013-1199.html	2023-11-07

URL	Date	SRC
http://www.ubuntu.com/usn/USN-2005-1	2023-11-07
https://access.redhat.com/security/cve/CVE-2013-4179	2013-09-03
https://bugzilla.redhat.com/show_bug.cgi?id=989707	2013-09-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openstack Search vendor "Openstack"		Havana Search vendor "Openstack" for product "Havana"				<= havana-2 Search vendor "Openstack" for product "Havana" and version " <= havana-2"		-		Affected
Openstack Search vendor "Openstack"		Havana Search vendor "Openstack" for product "Havana"				havana-1 Search vendor "Openstack" for product "Havana" and version "havana-1"		-		Affected
Openstack Search vendor "Openstack"		Compute Search vendor "Openstack" for product "Compute"				2013.1.3 Search vendor "Openstack" for product "Compute" and version "2013.1.3"		-		Affected