CVE-2025-40918— Authen::SASL::Perl::DIGEST_MD5 versions 2.04 through 2.1800 for Perl generates the cnonce insecurely
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2025-40918
Vulnerability Information
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Vulnerability Title
Authen::SASL::Perl::DIGEST_MD5 versions 2.04 through 2.1800 for Perl generates the cnonce insecurely
Source: CVE Program / CVE List V5
Vulnerability Description
Authen::SASL::Perl::DIGEST_MD5 versions 2.04 through 2.1800 for Perl generates the cnonce insecurely. The cnonce (client nonce) is generated from an MD5 hash of the PID, the epoch time and the built-in rand function. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. According to RFC 2831, The cnonce-value is an opaque quoted string value provided by the client and used by both client and server to avoid chosen plaintext attacks, and to provide mutual authentication. The security of the implementation depends on a good choice. It is RECOMMENDED that it contain at least 64 bits of entropy.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
可预测问题
Source: CVE Program / CVE List V5
Vulnerability Title
Authen::SASL::Perl::DIGEST_MD5 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Authen::SASL::Perl::DIGEST_MD5是Perl社区的一个Perl语言中的模块。 Authen::SASL::Perl::DIGEST_MD5 2.04至2.1800及之前版本存在安全漏洞，该漏洞源于cnonce生成不安全。
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 |
|---|---|---|---|---|
| EHUELS | Authen::SASL::Perl::DIGEST_MD5 | 2.04 ~ 2.1800 | - |
II. Public POCs for CVE-2025-40918
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-40918 (1)
Other References for CVE-2025-40918 (1)
IV. Related Vulnerabilities
Same weakness: CWE-340
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V. Comments for CVE-2025-40918
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