Vulnerability in Wowza Streaming Engine
CVE-2021-31540
Wowza Streaming Engine through 4.8.5 (in a default installation) has incorrect file permissions of configuration files in the conf/ directory. A regular local user is able to read and write to all the configuration files, e.g., modify the application server configuration.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.wowza.com/products/streaming-engine (Vendor Advisory)
- www.gruppotim.it/redteam (Exploit, Third Party Advisory)
- www.wowza.com/docs/wowza-streaming-engine-4-8-12-release-notes (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-31540?
- CVE-2021-31540 is a high-severity vulnerability in Wowza Streaming Engine, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.1/10. Published 2021-04-23.
- How severe is CVE-2021-31540?
- High severity. CVSS v3 base score is 7.1 out of 10.