VDB
CVE-2021-33880
CVE-2021-33880
PUBLISHED
The aaugustin websockets library before 9.1 for Python has an Observable Timing Discrepancy on servers when HTTP Basic Authentication is enabled with basic_auth_protocol_factory(credentials=...). An attacker may be able to guess a password via a timing attack.
EPSS 0.31% · 54.6th percentile
Risk Scores
EPSS Score
0.31%
54.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | python-websockets | 2.6-1, 0, 3.0-1 |
| Ubuntu:24.04:LTS | python-websockets | 10.4-1, 0 |
| Ubuntu:20.04:LTS | python-websockets | 7.0-1, 8.1-1, 0 |
| Ubuntu:22.04:LTS | python-websockets | 9.1-1, 8.1-1, 0 |
| Ubuntu:25.10 | python-websockets | 15.0.1-1, 0, 14.1-1build1 |
| Ubuntu:18.04:LTS | python-websockets | 0, 3.4-1, 3.3-1 |
Exploit Intelligence
Timeline
- CVE Published
- Jun 8, 2021 EPSS Score
- Jun 19, 2021 EPSS Score
- Aug 9, 2021 EPSS Score
- Oct 9, 2021 EPSS Score
- Dec 9, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 7, 2022 EPSS Score
- Feb 10, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jun 9, 2022 EPSS Score
- Aug 10, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-33880 third-party-advisory
- https://github.com/aaugustin/websockets/commit/547a26b685d08cac0aa64e5e65f7867ac0ea9bc0 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-33880 third-party-advisory