Privilege escalation in Cryptomator
CVE-2023-39520
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cryptomator — versions <= 1.9.2
Weakness classification (CWE)
References
- github.com/cryptomator/cryptomator/security/advisories/GHSA-62gx-54j7-mjh3 (Exploit, Mitigation, Vendor Advisory)
- github.com/cryptomator/cryptomator/commit/727c32ad50c3901a6144a11cf984a3b7ebcf8… (Patch)
- github.com/cryptomator/cryptomator/releases/download/1.9.2/Cryptomator-1.9.2-x6… (Product)
- github.com/cryptomator/cryptomator/releases/tag/1.9.3 (Release Notes)
Frequently asked questions
- What is CVE-2023-39520?
- CVE-2023-39520 is a medium-severity vulnerability in Cryptomator, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2023-08-07.
- How severe is CVE-2023-39520?
- Medium severity. CVSS v3 base score is 5.5 out of 10.