CVE-2021-25314

Root escalation via world-writable temporary files

Published Apr 14, 2021 · Updated Sep 17, 2024

Temporary-file permission flaws in SUSE Linux Enterprise High Availability hawk2 before 2.6.3 allow local users to escalate to root. Hawk sets mode 0666 on temporary files in report.rb, invoker.rb, and crm_script.rb, letting other local users rewrite data before privileged consumers process it. The crm_script.rb path passes an attacker-modifiable file to root-level crm, enabling arbitrary cluster reconfiguration and root code execution.

CVSS severity7.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Temporary-file permission flaws in SUSE Linux Enterprise High Availability hawk2 before 2.6.3 allow local users to escalate to root. Hawk sets mode 0666 on temporary files in report.rb, invoker.rb, and crm_script.rb, letting other local users rewrite data before privileged consumers process it. The crm_script.rb path passes an attacker-modifiable file to root-level crm, enabling arbitrary cluster reconfiguration and root code execution.

The record

CVE
CVE-2021-25314
Published
Apr 14, 2021
Updated
Sep 17, 2024
Vendor
SUSE
Product
SUSE Linux Enterprise High Availability Extension
Classifications
CWE-378, CWE-668, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2021CVE 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=hawk2 <2.6.3+git.1614684118.af555ad9
  2. Affected versionversion=hawk2 <2.6.3+git.1614685906.812c31e9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

SUSE · SUSE Linux Enterprise High Availability Extensionversion=hawk2 <2.6.3+git.1614684118.af555ad9; version=hawk2 <2.6.3+git.1614685906.812c31e9

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-378Creation of Temporary File With Insecure Permissions
CWE-668Exposure of Resource to Wrong Sphere
T1068Exploitation for Privilege Escalation

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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