CVE-2020-4043

Phar unserialization vulnerability in phpMussel

Description

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.

Category

7.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.57% Top 20%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: phpMussel phpMussel
Published at:
Updated at:

References

Link Tags
https://github.com/phpMussel/phpMussel/security/advisories/GHSA-qr95-4mq5-r3fh third party advisory mitigation
https://github.com/phpMussel/phpMussel/issues/167 third party advisory patch
https://github.com/phpMussel/phpMussel/pull/173 third party advisory patch
https://github.com/phpMussel/phpMussel/commit/97f25973433921c1f953430f32d3081adc4851a4 release notes third party advisory patch
https://github.com/phpMussel/phpMussel/security/policy#currently-known-vulnerabilities third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-4043?
CVE-2020-4043 has been scored as a high severity vulnerability.
How to fix CVE-2020-4043?
To fix CVE-2020-4043, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-4043 being actively exploited in the wild?
It is possible that CVE-2020-4043 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-4043?
CVE-2020-4043 affects phpMussel phpMussel.
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