CVE-2017-20147

Exp

In the ebuild package through smokeping-2.7.3-r1 for SmokePing on Gentoo, the initscript uses a PID file that is writable by the smokeping user. By writing arbitrary PIDs to that file, the smokeping user can cause a denial of service to arbitrary PIDs when the service is stopped.

Published: 2022-09-20 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-20147 is rated High Exploit Risk (60/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.83%). 1 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-2017-20147

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

Exploit prediction scoring system (EPSS) score for CVE-2017-20147

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 0.26% 0.83% +0.57%
2 2025-10-03 0.39% 0.26% -0.13%
3 2025-10-02 — 0.39% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-20147

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/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]
6.5 3.1 MEDIUM
CVSS:3.1/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 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2017-20147

OS Trackers for CVE-2017-20147

vendor priority summary link
alpine — CVE-2017-20147: 1 source package rows (smokeping); 1 state rows across 1 repos (3.17-main); fixed 0, open 1. https://security.alpinelinux.org/vuln/CVE-2017-20147
gentoo normal CVE-2017-20147: 1 GLSA(s) (202209-08), 1 atom(s) (net-analyzer/smokeping); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-20147
ubuntu medium CVE-2017-20147 medium priority: Ubuntu including 1 source packages (smokeping), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 7, ignored 6. https://ubuntu.com/security/CVE-2017-20147

Affected software / configurations for CVE-2017-20147

Vendor Product Version Raw CPE
smokeping smokeping <= 2.7.3-r1 cpe:2.3:a:smokeping:smokeping:*:*:*:*:*:*:*:*

References for CVE-2017-20147

URL Tags
https://bugs.gentoo.org/631140 Exploit Issue Tracking Third Party Advisory
https://security.gentoo.org/glsa/202209-08 Third Party Advisory
cvelogic Threat Intelligence