CVE-2017-16818

RADOS Gateway in Ceph 12.1.0 through 12.2.1 allows remote authenticated users to cause a denial of service (assertion failure and application exit) by leveraging "full" (not necessarily admin) privileges to post an invalid profile to the admin API, related to rgw/rgw_iam_policy.cc, rgw/rgw_basic_types.h, and rgw/rgw_iam_types.h.

Published: 2017-12-20 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-16818 is rated Moderate Risk (56.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.31%). EPSS rose +1.73% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2017-16818

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 2026-06-15 0.59% 2.31% +1.73%
2 2025-11-04 0.36% 0.59% +0.23%
3 2025-03-30 — 0.36% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-16818

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]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2017-16818

OS Trackers for CVE-2017-16818

vendor priority summary link
debian unimportant CVE-2017-16818 unimportant 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-2017-16818
redhat medium — https://access.redhat.com/security/cve/CVE-2017-16818
suse high CVE-2017-16818 severity important: SUSE including 295 source package names (ceph, ceph-12.2.2+git.1513357992.5030136da9-2.10.1, …), 457 product×package rows across 50 product lines (Image SLES12-SP5-SAP-Azure-LI-BYOS-Production, Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production, … (50 product lines)): Fixed 325, Known Not Affected 132. https://www.suse.com/security/cve/CVE-2017-16818/
ubuntu low CVE-2017-16818 low priority: Ubuntu including 1 source packages (ceph), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): not-affected 3, released 2. https://ubuntu.com/security/CVE-2017-16818

Affected software / configurations for CVE-2017-16818

Vendor Product Version Raw CPE
redhat ceph >= 12.1.0, <= 12.2.1 cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:*
fedoraproject fedora 27 cpe:2.3:o:fedoraproject:fedora:27:*:*:*:*:*:*:*

References for CVE-2017-16818

cvelogic Threat Intelligence