Deserialization in Phpmussel
CVE-2020-4043
phpMussel from versions 1.0.0 and less than 1.6.0 has an unserialization vulnerability in PHP's phar wrapper. Uploading a specially crafted file to an affected version allows arbitrary code execution (discovered, tested, and confirmed by myself), so the risk factor should be regarded as very high. Newer phpMussel versions don't use PHP's phar wrapper, and are therefore unaffected. This has been fixed in version 1.6.0.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.026 (84.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Phpmussel — versions >= 1.0.0, < 1.6.0
- Phpmussel Project
Weakness classification (CWE)
References
- github.com/phpMussel/phpMussel/security/advisories/GHSA-qr95-4mq5-r3fh (Third Party Advisory, Mitigation)
- github.com/phpMussel/phpMussel/issues/167 (Patch, Third Party Advisory)
- github.com/phpMussel/phpMussel/pull/173 (Patch, Third Party Advisory)
- github.com/phpMussel/phpMussel/commit/97f25973433921c1f953430f32d3081adc4851a4 (Patch, Third Party Advisory, Release Notes)
- github.com/phpMussel/phpMussel/security/policy (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-4043?
- CVE-2020-4043 is a high-severity vulnerability in Phpmussel, classified under Deserialization of Untrusted Data. CVSS score: 7.7/10. Published 2020-06-10.
- How severe is CVE-2020-4043?
- High severity. CVSS v3 base score is 7.7 out of 10.