CVE-2017-8447

An error was found in the X-Pack Security 5.3.0 to 5.5.2 privilege enforcement. If a user has either 'delete' or 'index' permissions on an index in a cluster, they may be able to issue both delete and index requests against that index.

Published: 2017-09-28 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-8447 is rated Moderate Risk (42.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.61%). 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-2017-8447

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 0.05% 0.61% +0.56%
2 2023-03-07 0.89% 0.05% -0.83%
3 2022-02-04 — 0.89% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-8447

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:H/A:N 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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
5.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 4.9 [email protected]

Weakness enumeration for CVE-2017-8447

Affected software / configurations for CVE-2017-8447

Vendor Product Version Raw CPE
elastic x-pack 5.3.0 cpe:2.3:a:elastic:x-pack:5.3.0:*:*:*:*:*:*:*
elastic x-pack 5.3.1 cpe:2.3:a:elastic:x-pack:5.3.1:*:*:*:*:*:*:*
elastic x-pack 5.3.2 cpe:2.3:a:elastic:x-pack:5.3.2:*:*:*:*:*:*:*
elastic x-pack 5.3.3 cpe:2.3:a:elastic:x-pack:5.3.3:*:*:*:*:*:*:*
elastic x-pack 5.4.0 cpe:2.3:a:elastic:x-pack:5.4.0:*:*:*:*:*:*:*
elastic x-pack 5.5.0 cpe:2.3:a:elastic:x-pack:5.5.0:*:*:*:*:*:*:*
elastic x-pack 5.5.2 cpe:2.3:a:elastic:x-pack:5.5.2:*:*:*:*:*:*:*

References for CVE-2017-8447

cvelogic Threat Intelligence