Secdo tries to execute a script at a hardcoded path if present, which allows a local authenticated user with ‘create folders or append data’ access to the root of the OS disk (C:) to gain system privileges if the path does not already exist or is writable. This issue affects all versions of Secdo for Windows.

Recent assessments:

xFreed0m at April 10, 2020 3:04pm UTC reported:

CVE-2020-1984 Secdo: Privilege escalation via hardcoded script path

Attack Vector LOCAL
Attack Complexity LOW
Privileges Required LOW
User Interaction NONE
Scope UNCHANGED
Confidentiality Impact HIGH
Integrity Impact HIGH
Availability Impact HIGH

Description

Secdo tries to execute a script at a hardcoded path if present, which allows a local authenticated user with ‘create folders or append data’ access to the root of the OS disk (C:) to gain system privileges if the path does not already exist or is writable.

Product Status

Secdo
Versions Affected
all versions on Windows
Severity: HIGH
CVSSv3.1 Base Score: 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Solution

This product is no longer supported and the issue is not going to be fixed. The issue can be completely mitigated by ensuring that unprivileged users do not have ‘create folder’ access on the root of the filesystem such as C:\ or on a folder named C:\Common.

##Workarounds and Mitigations
This issue can be mitigated by :

• Ensure unprivileged users do not have ‘create folder’ access on the root of filesystem such as C:.

or

• Creating a folder named C:\Common and ensuring unprivileged users do not have ‘create folder’ access.

Acknowledgements

We like to thank Eviatar Gerzi of CyberArk Labs Team for discovering and reporting this issue.

<https://security.paloaltonetworks.com/CVE-2020-1984&gt;

Assessed Attacker Value: 4
Assessed Attacker Value: 4Assessed Attacker Value: 4