Observable discrepancy in aaugustin websockets



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-33880
CWE-ID CWE-203
Exploitation vector Network
Public exploit N/A
Vulnerable software
 websockets
Universal components / Libraries / Libraries used by multiple products

Vendor Aymeric Augustin

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Observable discrepancy

EUVDB-ID: #VU54078

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33880

CWE-ID: CWE-203 - Observable discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to observable timing discrepancy on server when HTTP Basic authentication is enabled with basic_auth_protocol_factory(credentials=...). A remote attacker can guess passwords via timing attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

websockets: 1.0 - 9.0.2

CPE2.3 External links

https://github.com/aaugustin/websockets/commit/547a26b685d08cac0aa64e5e65f7867ac0ea9bc0


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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