CVE-2021-43298
moderate-risk
Published 2022-01-25
The code that performs password matching when using 'Basic' HTTP authentication does not use a constant-time memcmp and has no rate-limiting. This means that an unauthenticated network attacker can brute-force the HTTP basic password, byte-by-byte, by recording the webserver's response time until the unauthorized (401) response.
Do I need to act?
-
0.38% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (2)
Third Party Advisory
https://github.com/embedthis/goahead/issues/304
Third Party Advisory
https://github.com/embedthis/goahead/issues/304
38
/ 100
moderate-risk
Severity
32/34 · Critical
Exploitability
1/34 · Minimal
Exposure
5/34 · Minimal