RCE in Basercms
CVE-2021-41243
There is a Potential Zip Slip Vulnerability and OS Command Injection Vulnerability on the management system of baserCMS. Users with permissions to upload files may upload crafted zip files which may execute arbitrary commands on the host operating system. This is a vulnerability that needs to be addressed when the management system is used by an unspecified number of users. If you are eligible, please update to the new version as soon as possible.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.022 (81.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: -0.000
Affected products
- Basercms
- Baserproject Basercms — versions < 4.5.4
Weakness classification (CWE)
References
- github.com/baserproject/basercms/security/advisories/GHSA-7rpc-9m88-cf9w (Third Party Advisory)
- github.com/baserproject/basercms/commit/9088b99c329d1faff3a2f1269f37b9a9d8d5f6ff (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41243?
- CVE-2021-41243 is a critical-severity vulnerability in Basercms, classified under OS Command Injection. CVSS score: 9.1/10. Published 2021-11-26.
- How severe is CVE-2021-41243?
- Critical severity. CVSS v3 base score is 9.1 out of 10.