Resource exhaustion in Sing4g 4gee Router Hh70vb
CVE-2021-33822
An issue was discovered on 4GEE ROUTER HH70VB Version HH70_E1_02.00_22. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.019 (78.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Sing4g 4gee_router_hh70vb
- Sing4g 4gee_router_hh70vb_firmware — versions hh70_e1_02.00_22
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-33822?
- CVE-2021-33822 is a high-severity vulnerability in Sing4g 4gee Router Hh70vb, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-06-18.
- How severe is CVE-2021-33822?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-33822 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.