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CVE-2016-9579

21
FAUCET Score

CVE-2016-9579 describes a denial-of-service vulnerability in Ceph Object Gateway, affecting branches 1.3.x and 2.x of Ceph, as well as products from Canonical and Red Hat. This flaw allows an unauthenticated attacker to trigger a denial of service by sending a specially crafted cross-origin HTTP request when the CORS policy is set to allow origin on a bucket. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, requiring no user interaction or privileges. Despite its high severity, 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
1.3CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage:1.3:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage_mon:1.3:*:*:*:*:*:*:*
2CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage_mon:2:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage_osd:1.3:*:*:*:*:*:*:*
2CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage_osd:2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.40%
Probability of exploitation in next 30 days
EPSS Percentile
90.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0440 is in the 83rd percentile among its peer group of 51,455 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 1.3 for Red Hat Enterprise Linux 7Fixed in: ceph-1:0.94.9-9.el7cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 1.3 for UbuntuFixed in: ceph
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 2 for Red Hat Enterprise Linux 7Fixed in: ceph-1:10.2.3-17.el7cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 2 for Ubuntu
View patch

Vendor Advisories (1)

redhatCVE-2016-9579Moderate

ceph: Object Gateway server DoS by sending invalid cross-origin HTTP request

Dec 8, 2016

References

rhn.redhat.com / errata/RHSA-2016-2954.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2956.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2994.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-2995.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
tracker.ceph.com / issues/18187
ExploitPatchVendor Advisory
securityfocus.com / bid/94936
Third Party AdvisoryVDB Entry