Vulnerability Details : CVE-2021-43298
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.
Products affected by CVE-2021-43298
- cpe:2.3:a:embedthis:goahead:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43298
0.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43298
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-43298
-
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.Assigned by: reefs@jfrog.com (Secondary)
-
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43298
-
https://github.com/embedthis/goahead/issues/304
Constant time password comparisons · Issue #304 · embedthis/goahead · GitHubThird Party Advisory
Jump to