RCE in Quickbox
CVE-2021-44981
In QuickBox Pro v2.5.8 and below, the config.php file has a variable which takes a GET parameter value and parses it into a shell_exec(''); function without properly sanitizing any shell arguments, therefore remote code execution is possible. Additionally, as the media server is running as root by default attackers can use the sudo command within this shell_exec(''); function, which allows for privilege escalation by means of RCE.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.037 (89.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000
Affected products
Weakness classification (CWE)
References
- websec.nl/blog/61b2b37a43a1155c848f3b08/websec finds critical vulnerabilities i… (Exploit, Third Party Advisory)
- github.com/QuickBox/QB/issues/202 (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-44981?
- CVE-2021-44981 is a high-severity vulnerability in Quickbox, classified under OS Command Injection. CVSS score: 8.8/10. Published 2022-01-24.
- How severe is CVE-2021-44981?
- High severity. CVSS v3 base score is 8.8 out of 10.