CVE-2017-20147Public exploit

Process termination via user-writable PID file

Published Sep 20, 2022 · Updated May 29, 2025

Denial of service in the Gentoo SmokePing ebuild through 2.7.3-r1 allows local users with smokeping access to terminate processes. The init script makes the PID-file directory writable by the smokeping account, allowing that account to replace the PID before root sends SIGTERM during service shutdown. Exploitation requires control of the smokeping account and a privileged service stop, after which any process that root can signal can be interrupted.

CVSS severity6.5
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Gentoo SmokePing ebuild through 2.7.3-r1 allows local users with smokeping access to terminate processes. The init script makes the PID-file directory writable by the smokeping account, allowing that account to replace the PID before root sends SIGTERM during service shutdown. Exploitation requires control of the smokeping account and a privileged service stop, after which any process that root can signal can be interrupted.

The record

CVE
CVE-2017-20147
Published
Sep 20, 2022
Updated
May 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-377, T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2022CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-377Insecure Temporary File
T1489Service Stop

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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