Auth bypass in Ave 53ab-Wbs
CVE-2020-21991
AVE DOMINAplus <=1.10.x suffers from an authentication bypass vulnerability due to missing control check when directly calling the autologin GET parameter in changeparams.php script. Setting the autologin value to 1 allows an unauthenticated attacker to permanently disable the authentication security control and access the management interface with admin privileges without providing credentials.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
- Ave 53ab-Wbs
- Ave 53ab-Wbs Firmware — versions 1.10.62
- Ave Dominaplus
- Ave Ts01
- Ave Ts01 Firmware — versions 1.0.65
- Ave Ts03x-V
- Ave Ts03x-V Firmware — versions 1.10.45a
- Ave Ts04x-V
- Ave Ts04x-V Firmware — versions 1.10.45a
- Ave Ts05
Weakness classification (CWE)
References
- www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5549.php (Exploit, Third Party Advisory)
- www.exploit-db.com/exploits/47822 (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2020-21991?
- CVE-2020-21991 is a critical-severity vulnerability in Ave 53ab-Wbs, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-04-28.
- How severe is CVE-2020-21991?
- Critical severity. CVSS v3 base score is 9.8 out of 10.