Auth bypass in Etinet Backbox E4.09
CVE-2021-33895
ETINET BACKBOX E4.09 and H4.09 mismanages password access control. When a user uses the User ID of the process running BBSV to login to the Backbox UI application, the system procedure (USER_AUTHENTICATE_) used for verifying the Password returns 0 (no error). The reason is that the user is not running the XYGate application. Hence, BBSV assumes the Password is correct. For H4.09, the affected version isT0954V04^AAO. For E4.09, the affected version is 22SEP2020. Note: If your current version is E4.10-16MAY2021 (version procedure T9999V04_16MAY2022_BPAKETI_10), a hotfix (FIXPAK-19OCT-2022) is available in version E4.10-19OCT2022. Resolution to CVE-2021-33895 in version E4.11-19OCT2022
Vulnerability class: Broken Authentication
EPSS: 0.009 (56.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Etinet Backbox_e4.09
- Etinet Backbox_e4.09_firmware — versions 2020-09-22
- Hpe Backbox_h4.09
- Hpe Backbox_h4.09_firmware — versions t0954v04\^aao
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-33895?
- CVE-2021-33895 is a high-severity vulnerability in Etinet Backbox E4.09, classified under Improper Authentication. CVSS score: 8.1/10. Published 2021-06-25.
- How severe is CVE-2021-33895?
- High severity. CVSS v3 base score is 8.1 out of 10.