Vulnerability · Published Feb 15, 2021 · Assigned by mitre

CVE-2020-28337

High 7.2

In plain English

A high-severity security flaw in the microweber/microweber package (Packagist). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 16.6% (higher than 97% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.2High

Exploit odds (30 days)16.6%top 3.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A directory traversal issue in the Utils/Unzip module in Microweber through 1.1.20 allows an authenticated attacker to gain remote code execution via the backup restore feature. To exploit the vulnerability, an attacker must have the credentials of an administrative user, upload a maliciously constructed ZIP file with file paths including relative paths (i.e., ../../), move this file into the backup directory, and execute a restore on this file.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	microweber/microweber	1.2.3	GHSA-pqcf-v8v5-jmcg

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/microweber/microweber/commit/777ee9c3e7519eb3672c79ac41066175b2001b50 x_refsource_MISC
https://sl1nki.page/advisories/CVE-2020-28337 x_refsource_MISC
https://sl1nki.page/blog/2021/02/01/microweber-zip-slip x_refsource_MISC
http://packetstormsecurity.com/files/162514/Microweber-CMS-1.1.20-Remote-Code-Execution.html x_refsource_MISC