The Telnet service for Polycom ViewStation before 7.2.4 does not restrict the number of failed login attempts, which makes it easier for remote attackers to guess usernames and passwords via a brute force attack.
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Viewstation_128 | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_128 | Polycom | 7.2 (including) | 7.2 (including) |
| Viewstation_512 | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_512 | Polycom | 7.2 (including) | 7.2 (including) |
| Viewstation_dcp | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_dcp | Polycom | 7.2 (including) | 7.2 (including) |
| Viewstation_fx_vs4000 | Polycom | 4.1.5 (including) | 4.1.5 (including) |
| Viewstation_h.323 | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_h.323 | Polycom | 7.2 (including) | 7.2 (including) |
| Viewstation_mp | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_mp | Polycom | 7.2 (including) | 7.2 (including) |
| Viewstation_sp_384 | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_sp_384 | Polycom | 7.2 (including) | 7.2 (including) |
| Viewstation_v.35 | Polycom | 6.5.1 (including) | 6.5.1 (including) |
| Viewstation_v.35 | Polycom | 7.2 (including) | 7.2 (including) |
Common protection mechanisms include:
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]