CVE-2022-21945

Service interruption via predictable debug-file path

Published Mar 16, 2022 · Updated Sep 17, 2024

Insecure temporary-file handling in openSUSE Factory cscreen 1.3 and earlier allows local users to interrupt cscreen or the system. The cscreen startup script writes debugging output to the predictable /tmp/cscreen.debug path instead of creating a uniquely named, protected file. A local user can preposition that path to disrupt cscreen; system-wide interruption requires a non-default configuration.

CVSS severity5.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure temporary-file handling in openSUSE Factory cscreen 1.3 and earlier allows local users to interrupt cscreen or the system. The cscreen startup script writes debugging output to the predictable /tmp/cscreen.debug path instead of creating a uniquely named, protected file. A local user can preposition that path to disrupt cscreen; system-wide interruption requires a non-default configuration.

The record

CVE
CVE-2022-21945
Published
Mar 16, 2022
Updated
Sep 17, 2024
Vendor
OpenSUSE
Product
openSUSE Factory
Classifications
CWE-377, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record 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=cscreen <=1.2-1.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OpenSUSE · openSUSE Factoryversion=cscreen <=1.2-1.3

Published CVSS scores

5.1SUSECVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
3.6NIST NVDAV:L/AC:L/Au:N/C:N/I:P/A:P
6.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-377Insecure Temporary File
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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