Deserialization of Untrusted Data in phpMussel - CVE-2020-4043
Published: June 18, 2020
Vulnerability identifier: #VU29125
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-4043
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: phpMussel
Affected software:
phpMussel
phpMussel
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in PHP's phar wrapper. A remote authenticated attacker can pass specially crafted file to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2020-4043
Install updates from vendor's website.
Sources
- https://github.com/phpMussel/phpMussel/commit/97f25973433921c1f953430f32d3081adc4851a4
- https://github.com/phpMussel/phpMussel/issues/167
- https://github.com/phpMussel/phpMussel/pull/173
- https://github.com/phpMussel/phpMussel/security/advisories/GHSA-qr95-4mq5-r3fh
- https://github.com/phpMussel/phpMussel/security/policy#currently-known-vulnerabilities