CVE-2016-9579

Exp

A flaw was found in the way Ceph Object Gateway would process cross-origin HTTP requests if the CORS policy was set to allow origin on a bucket. A remote unauthenticated attacker could use this flaw to cause denial of service by sending a specially-crafted cross-origin HTTP request. Ceph branches 1.3.x and 2.x are affected.

Published: 2018-08-01 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-9579 is rated High Exploit Risk (74.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 18.01%, 95th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-9579

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-9579

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 17.73% 18.01% +0.28%
2 2025-12-27 18.01% 17.73% -0.28%
3 2025-10-29 — 18.01% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-9579

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2016-9579

OS Trackers for CVE-2016-9579

vendor priority summary link
debian not yet assigned CVE-2016-9579 not yet assigned priority: Debian including 1 source packages (ceph), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-9579
redhat medium — https://access.redhat.com/security/cve/CVE-2016-9579
suse low CVE-2016-9579 severity low: SUSE including 49 source package names (ceph, ceph-10.2.10+git.1510313171.6d5f0aeac1-13.7.3, …), 51 product×package rows across 5 product lines (SUSE Enterprise Storage 3, SUSE Enterprise Storage 4, … (5 product lines)): Fixed 42, Known Not Affected 9. https://www.suse.com/security/cve/CVE-2016-9579/
ubuntu medium CVE-2016-9579 medium priority: Ubuntu including 1 source packages (ceph), 6 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): not-affected 4, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2016-9579

Affected software / configurations for CVE-2016-9579

Vendor Product Version Raw CPE
redhat ceph_storage 1.3 cpe:2.3:a:redhat:ceph_storage:1.3:*:*:*:*:*:*:*
redhat ceph_storage_mon 1.3 cpe:2.3:a:redhat:ceph_storage_mon:1.3:*:*:*:*:*:*:*
redhat ceph_storage_mon 2 cpe:2.3:a:redhat:ceph_storage_mon:2:*:*:*:*:*:*:*
redhat ceph_storage_osd 1.3 cpe:2.3:a:redhat:ceph_storage_osd:1.3:*:*:*:*:*:*:*
redhat ceph_storage_osd 2 cpe:2.3:a:redhat:ceph_storage_osd:2:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
redhat ceph_storage 2.0 cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*

References for CVE-2016-9579

cvelogic Threat Intelligence