CVE-2021-43298
25.01.2022, 20:15
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.Enginsight
| Vendor | Product | Version |
|---|---|---|
| embedthis | goahead | 𝑥 < 5.1.4 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-208 - Observable Timing DiscrepancyTwo 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.
- CWE-307 - Improper Restriction of Excessive Authentication AttemptsThe product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks.