Resource exhaustion in Wowza Streaming Engine
CVE-2021-35492
Wowza Streaming Engine through 4.8.11+5 could allow an authenticated, remote attacker to exhaust filesystem resources via the /enginemanager/server/vhost/historical.jsdata vhost parameter. This is due to the insufficient management of available filesystem resources. An attacker could exploit this vulnerability through the Virtual Host Monitoring section by requesting random virtual-host historical data and exhausting available filesystem resources. A successful exploit could allow the attacker to cause database errors and cause the device to become unresponsive to web-based management. (Manual intervention is required to free filesystem resources and return the application to an operational state.)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.gruppotim.it/redteam (Exploit, Third Party Advisory)
- www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notes (Release Notes, Vendor Advisory)
- n4nj0.github.io/advisories/wowza-streaming-engine-i/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-35492?
- CVE-2021-35492 is a medium-severity vulnerability in Wowza Streaming Engine, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2021-10-05.
- How severe is CVE-2021-35492?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-35492 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.