Auth bypass in Netis-Systems Wf2411
CVE-2019-8985
On Netis WF2411 with firmware 2.1.36123 and other Netis WF2xxx devices (possibly WF2411 through WF2880), there is a stack-based buffer overflow that does not require authentication. This can cause denial of service (device restart) or remote code execution. This vulnerability can be triggered by a GET request with a long HTTP "Authorization: Basic" header that is mishandled by user_auth->user_ok in /bin/boa.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.133 (96.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.133 · newest: 0.133 · change: 0.000
Affected products
- Netis-Systems Wf2411
- Netis-Systems Wf2411 Firmware — versions 2.1.36123
- Netis-Systems Wf2880
- Netis-Systems Wf2880 Firmware — versions 2.1.36123
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/WhooAmii/whooamii.github.io/blob/master/2018/netis/buffer overflow.md (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-8985?
- CVE-2019-8985 is a critical-severity vulnerability in Netis-Systems Wf2411, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2019-02-21.
- How severe is CVE-2019-8985?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-8985 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.