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Authen-SASL-2.1800
⭐ Starred 6
Security Advisories (1)
CVE-2025-40918 (2025-07-16)

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.

Changes for version 2.1800

  • Changed
    • Minimum required Perl version 5.14+ (from 5.6.0); Digest::HMAC_MD5 was 5.8.1, making 5.8.1 the effective minimum
    • Move example code to the eg/ directory
  • Added
    • Mechanisms XOAUTH2 and OAUTHBEARER added
    • Include mechanisms available on server when negotiation fails on the client
    • Add `_acceptable()` function to allow mechanism implementation classes to decline selection based on the callback values

Modules

Authen::SASL
SASL Authentication framework
Authen::SASL::Perl
Perl implementation of the SASL Authentication framework
Authen::SASL::Perl::ANONYMOUS
Anonymous Authentication class
Authen::SASL::Perl::CRAM_MD5
CRAM MD5 Authentication class
Authen::SASL::Perl::DIGEST_MD5
Digest MD5 Authentication class
Authen::SASL::Perl::EXTERNAL
External Authentication class
Authen::SASL::Perl::GSSAPI
GSSAPI (Kerberosv5) Authentication class
Authen::SASL::Perl::LOGIN
Login Authentication class
Authen::SASL::Perl::OAUTHBEARER
OAUTHBEARER Authentication class
Authen::SASL::Perl::PLAIN
Plain Login Authentication class
Authen::SASL::Perl::XOAUTH2
XOAUTH2 Authentication class

Provides

Authen::SASL::CRAM_MD5
in lib/Authen/SASL/CRAM_MD5.pm
Authen::SASL::EXTERNAL
in lib/Authen/SASL/EXTERNAL.pm

Examples

Other files