CVE-2021-22640
Published: 28 July 2022
Summary
CVE-2021-22640 is a high-severity Authentication Bypass by Capture-replay (CWE-294) vulnerability in Ovarro Twinsoft. Its CVSS base score is 7.5 (High).
Operationally, ranked at the 47.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-9776
Vulnerability details
An attacker can decrypt the Ovarro TBox login password by communication capture and brute force attacks.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control directly enforces limits on consecutive invalid logon attempts and automatic response (e.g., lockout) to prevent brute-force exploitation of authentication mechanisms.
Allows detection of capture-replay attacks by showing the replayed logon's timestamp as the last logon.
Training instructs users on protecting credentials from disclosure or unauthorized access.
Training records for security awareness and role-based training verify education on credential protection practices, tangibly reducing risks from mishandling or exposing credentials.
Specific conditions can include excessive failed attempts, triggering stronger authentication that restricts brute-force exploitation.
Protecting authenticator content from unauthorized disclosure and modification while requiring protective controls addresses insufficiently protected credentials.
Rules of behavior include credential protection and non-sharing requirements, reducing exposure of insufficiently protected credentials.
Terminating or revoking credentials stops use of insufficiently protected or lingering credentials post-termination.