CVE-2021-43298 — Observable Timing Discrepancy in Goahead

CWE-208 — Observable Timing DiscrepancyCWE-307 — Improper Restriction of Excessive Authentication Attempts3 documents3 sources
Severity
9.8CRITICALNVD
EPSS
0.4%
top 40.63%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Embedthis Goahead
Timeline
PublishedJan 25
Latest updateJan 26

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5embedthis/goaheadunspecified — 5.1.4
▶NVDembedthis/goahead< 5.1.4

🔴Vulnerability Details

2
GHSA
GHSA-cfh2-3f5r-4vf9: The code that performs password matching when using 'Basic' HTTP authentication does not use a constant-time memcmp and has no rate-limiting↗2022-01-26
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CVEList
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↗2022-01-25
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CVE-2021-43298 — Observable Timing Discrepancy | cvebase