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CVE-2021-43298

Quick assessment

Affected
embedthis goahead
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Embedthis Software GoAhead是美国Embedthis Software公司的一款嵌入式Web服务器。 Embedthis Software GoAhead存在安全漏洞，该漏洞源于“基本”HTTP身份验证时执行密码匹配的代码不使用常量时间memcmp，也没有速率限制。攻击者可利用该漏洞通过记录web服务器的响应时间，直到未经授权的(401)响应，逐字逐句地暴力破解HTTP基本密码。

AI Predicted 7.5 Difficulty: Easy EPSS 2.26% · P81
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I. Basic Information for CVE-2021-43298

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Embedthis Software GoAhead 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Embedthis Software GoAhead是美国Embedthis Software公司的一款嵌入式Web服务器。 Embedthis Software GoAhead存在安全漏洞，该漏洞源于“基本”HTTP身份验证时执行密码匹配的代码不使用常量时间memcmp，也没有速率限制。攻击者可利用该漏洞通过记录web服务器的响应时间，直到未经授权的(401)响应，逐字逐句地暴力破解HTTP基本密码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
embedthis goahead unspecified ~ 5.1.4 -

II. Public POCs for CVE-2021-43298

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III. Intelligence Information for CVE-2021-43298

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Other References for CVE-2021-43298 (1)

IV. Related Vulnerabilities

Same product: goahead
Same vendor: embedthis
Same weakness: CWE-208

V. Comments for CVE-2021-43298

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