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    2 vulnerabilities found for thinbus-srp-npm by simbo1905

    CVE-2025-54885 (GCVE-0-2025-54885)

    Vulnerability from nvd – Published: 2025-08-07 00:02 – Updated: 2025-08-07 14:13
    VLAI
    Title
    Thinbus generates insufficient entropy: 252 bits vs minimum 256 bits
    Summary
    Thinbus Javascript Secure Remote Password is a browser SRP6a implementation for zero-knowledge password authentication. In versions 2.0.0 and below, a protocol compliance bug causes the client to generate a fixed 252 bits of entropy instead of the intended bit length of the safe prime (defaulted to 2048 bits). The client public value is being generated from a private value that is 4 bits below the specification. This reduces the protocol's designed security margin it is now practically exploitable. The servers full sized 2048 bit random number is used to create the shared session key and password proof. This is fixed in version 2.0.1.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2025-54885 (GCVE-0-2025-54885)

    Vulnerability from cvelistv5 – Published: 2025-08-07 00:02 – Updated: 2025-08-07 14:13
    VLAI
    Title
    Thinbus generates insufficient entropy: 252 bits vs minimum 256 bits
    Summary
    Thinbus Javascript Secure Remote Password is a browser SRP6a implementation for zero-knowledge password authentication. In versions 2.0.0 and below, a protocol compliance bug causes the client to generate a fixed 252 bits of entropy instead of the intended bit length of the safe prime (defaulted to 2048 bits). The client public value is being generated from a private value that is 4 bits below the specification. This reduces the protocol's designed security margin it is now practically exploitable. The servers full sized 2048 bit random number is used to create the shared session key and password proof. This is fixed in version 2.0.1.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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