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CVE-2013-4463

11
FAUCET Score

CVE-2013-4463 describes a denial-of-service vulnerability in OpenStack Compute (Nova) Folsom, Grizzly, and Havana. The flaw stems from Nova's failure to properly verify the virtual size of QCOW2 images, allowing a local attacker to consume host file system disk space using a compressed QCOW2 image. This issue is a partial fix for CVE-2013-2096. The vulnerability has a low severity CVSS score of 2.1 (AV:L/AC:L/Au:N/C:N/I:N/A:P), indicating local access, low attack complexity, no authentication required, and only a partial impact on availability. Its FAUCET Risk Score is 5/100, and its EPSS score is very low, suggesting minimal exploitability in the wild. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage are also non-existent, indicating a lack of widespread attention or concern regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:openstack:folsom:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:openstack:grizzly:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:openstack:havana:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 38th percentile among its peer group of 2,096 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, 0.0 Bluesky, 0.0 Mastodon, and 0.6 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-0:2013.1.4-4.el6ost
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 4Fixed in: openstack-nova

Vendor Advisories (2)

pipGHSA-5644-2v3h-5w4xlow

OpenStack Nova denial of service through compressed disk images

May 17, 2022
redhatCVE-2013-4463Moderate

Nova: Compressed disk image DoS

Oct 31, 2013

References

rhn.redhat.com / errata/RHSA-2014-0112.html
bugs.launchpad.net / nova/+bug/1206081
openwall.com / lists/oss-security/2013/10/31/3
ubuntu.com / usn/USN-2247-1