What is the CVSS score of CVE-2023-39520?

CVE-2023-39520 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Is there a public PoC exploit available for CVE-2023-39520?

Yes, a public proof-of-concept exploit is available for CVE-2023-39520. Prioritise patching immediately. EPSS: 0.3%.

Is there a patch available for CVE-2023-39520?

Yes, a patch is available for CVE-2023-39520. Update the affected software to the latest version immediately.

Cryptomator CVE-2023-39520

HIGH

Improper Privilege Management (CWE-269)

2023-08-07 security-advisories@github.com

Privilege Escalation Cryptomator

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Aug 07, 2023 - 20:15 nvd

HIGH 7.8

DescriptionNVD

Cryptomator encrypts data being stored on cloud infrastructure. The MSI installer provided on the homepage for Cryptomator version 1.9.2 allows local privilege escalation for low privileged users, via the repair function. The problem occurs as the repair function of the MSI is spawning an SYSTEM Powershell without the -NoProfile parameter. Therefore the profile of the user starting the repair will be loaded. Version 1.9.3 contains a fix for this issue. Adding a -NoProfile to the powershell is a possible workaround.

AnalysisAI

Cryptomator encrypts data being stored on cloud infrastructure. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Improper Privilege Management (CWE-269), which allows attackers to escalate privileges to gain unauthorized elevated access. Cryptomator encrypts data being stored on cloud infrastructure. The MSI installer provided on the homepage for Cryptomator version 1.9.2 allows local privilege escalation for low privileged users, via the repair function. The problem occurs as the repair function of the MSI is spawning an SYSTEM Powershell without the -NoProfile parameter. Therefore the profile of the user starting the repair will be loaded. Version 1.9.3 contains a fix for this issue. Adding a -NoProfile to the powershell is a possible workaround. Affected products include: Cryptomator. Version information: version 1.9.2.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply principle of least privilege, validate privilege transitions, implement proper role separation.