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CVE-2013-4185

14
FAUCET Score

CVE-2013-4185 is an algorithmic complexity vulnerability affecting OpenStack Compute (Nova) versions before 2013.1.3 and Havana before havana-3, including Red Hat variants. An authenticated remote attacker can trigger a denial of service (DoS) by initiating numerous server creation operations, leading to excessive network source security group policy updates and overwhelming nova-network. The CVSS score of 4.0 indicates a low severity, requiring authentication (Au:S) for exploitation, with a low impact on availability (A:P). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2013.1, < 2013.1.3CPE matchmatch criteria
cpe:2.3:a:openstack:compute:*:*:*:*:*:*:*:*
>= 2013.2, < 2013.2.3CPE matchmatch criteria
cpe:2.3:a:openstack:compute:*:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:redhat:openstack:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:L/Au:S/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 92nd percentile among its peer group of 21,939 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

pippatch availablevia ghsa
Product: novaFixed in: 12.0.0a0
redhatpatch availablevia redhat_api
Product: OpenStack 3 for RHEL 6Fixed in: openstack-nova-0:2013.1.3-3.el6ost
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 4Fixed in: openstack-nova

Vendor Advisories (2)

pipGHSA-ph2h-hh49-vh27medium

OpenStack Nova Denial of Service in network source security groups

May 14, 2022
redhatCVE-2013-4185Moderate

OpenStack: Nova network source security groups denial of service

Aug 6, 2013

References

rhn.redhat.com / errata/RHSA-2013-1199.html
Vendor Advisory
bugs.launchpad.net / nova/+bug/1184041
ExploitThird Party Advisory
seclists.org / oss-sec/2013/q3/282
PatchThird Party Advisory