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Incorrect Default Permissions

High
gruberroland published GHSA-q8g5-45m4-q95p Jun 27, 2022

Package

ldap-account-manager (none)

Affected versions

< 8.0

Patched versions

8.0

Description

Impact

The tmp directory, which is accessible by /lam/tmp/, allows interpretation of .php (and .php5/.php4/.phpt/etc) files. An attacker capable of writing files under
www-data privileges can write a web-shell into this directory, and gain a Code Execution on the host.

Patches

The issue is fixed in version 8.0.

Workarounds

Disallow executing PHP scripts in (/var/lib/ldap-account-manager/)tmp directory.

For more information

If you have any questions or comments about this advisory:

Credits

  • Arseniy Sharoglazov

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE ID

CVE-2022-31087

Weaknesses

No CWEs