CVE-2021-25317 - CVE House
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Status published Low CVE-2021-25317

cups: ownership of /var/log/cups allows the lp user to create files as root

Vulnerability Description

A Incorrect Default Permissions vulnerability in the packaging of cups of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9; openSUSE Leap 15.2, Factory allows local attackers with control of the lp users to create files as root with 0644 permissions without the ability to set the content. This issue affects: SUSE Linux Enterprise Server 11-SP4-LTSS cups versions prior to 1.3.9. SUSE Manager Server 4.0 cups versions prior to 2.2.7. SUSE OpenStack Cloud Crowbar 9 cups versions prior to 1.7.5. openSUSE Leap 15.2 cups versions prior to 2.2.7. openSUSE Factory cups version 2.3.3op2-2.1 and prior versions.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Matthias Gerstner of SUSE

References

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Affected Vendor

Affected Software

SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9, openSUSE Leap 15.2, Factory
Vulnerable Versions:
cups

Timeline

Official Publish: May 5th, 2021
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-276

MITRE ATT&CK TTPs

T1222 File and Directory Permissions Modification
Defense Evasion
T1078 Valid Accounts
Persistence
T1574 Hijack Execution Flow
Privilege Escalation
T1021 Remote Services
Lateral Movement
T1005 Data from Local System
Collection