CVE-2022-23950Public exploit

Local denial of service via fixed IPC socket

Published Sep 21, 2022 · Updated May 27, 2025

Denial of service in the Keylime Revocation Notifier before 6.3.0 allows local users to stop revocation notifications via a fixed socket path. The revocation_notifier.py broker binds ZeroMQ to /tmp/keylime.verifier.ipc, where another user can pre-create a directory so the socket cannot be created. The attack requires local access and placement before notifier startup; the verifier continues running while revocation events are no longer delivered.

CVSS severity7.5
High
EPSS probability1.36%
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 Keylime Revocation Notifier before 6.3.0 allows local users to stop revocation notifications via a fixed socket path. The revocation_notifier.py broker binds ZeroMQ to /tmp/keylime.verifier.ipc, where another user can pre-create a directory so the socket cannot be created. The attack requires local access and placement before notifier startup; the verifier continues running while revocation events are no longer delivered.

The record

CVE
CVE-2022-23950
Published
Sep 21, 2022
Updated
May 27, 2025
Vendor
Keylime
Product
Keylime
Classifications
CWE-379, CWE-668, T1489
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 21, 2022CVE publishedPublication date reported by the CVE source.
  2. May 27, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=keylime 6.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Keylime · Keylimeversion=keylime 6.3.0

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-379Creation of Temporary File in Directory with Insecure Permissions
CWE-668Exposure of Resource to Wrong Sphere
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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