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    4 vulnerabilities by antonkueltz

    CVE-2024-21502 (GCVE-0-2024-21502)

    Vulnerability from nvd – Published: 2024-02-24 05:00 – Updated: 2024-11-01 18:49
    VLAI
    Summary
    Versions of the package fastecdsa before 2.3.2 are vulnerable to Use of Uninitialized Variable on the stack, via the curvemath_mul function in src/curveMath.c, due to being used and interpreted as user-defined type. Depending on the variable's actual value it could be arbitrary free(), arbitrary realloc(), null pointer dereference and other. Since the stack can be controlled by the attacker, the vulnerability could be used to corrupt allocator structure, leading to possible heap exploitation. The attacker could cause denial of service by exploiting this vulnerability.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-457 - Use of Uninitialized Variable
    Assigner
    Impacted products
    Vendor Product Version
    n/a fastecdsa Affected: 0 , < 2.3.2 (semver)
    Credits
    Vladimir Cherepanov
    Show details on NVD website

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    CVE-2020-12607 (GCVE-0-2020-12607)

    Vulnerability from nvd – Published: 2020-06-02 21:00 – Updated: 2024-08-04 12:04
    VLAI
    Summary
    An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA implementation, the point at infinity is mishandled. This means that for an extreme value in k and s^-1, the signature verification fails even if the signature is correct. This behavior is not solely a usability problem. There are some threat models where an attacker can benefit by successfully guessing users for whom signature verification will fail.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    Date Public
    2020-06-01 00:00
    Show details on NVD website

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    CVE-2024-21502 (GCVE-0-2024-21502)

    Vulnerability from cvelistv5 – Published: 2024-02-24 05:00 – Updated: 2024-11-01 18:49
    VLAI
    Summary
    Versions of the package fastecdsa before 2.3.2 are vulnerable to Use of Uninitialized Variable on the stack, via the curvemath_mul function in src/curveMath.c, due to being used and interpreted as user-defined type. Depending on the variable's actual value it could be arbitrary free(), arbitrary realloc(), null pointer dereference and other. Since the stack can be controlled by the attacker, the vulnerability could be used to corrupt allocator structure, leading to possible heap exploitation. The attacker could cause denial of service by exploiting this vulnerability.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-457 - Use of Uninitialized Variable
    Assigner
    Impacted products
    Vendor Product Version
    n/a fastecdsa Affected: 0 , < 2.3.2 (semver)
    Credits
    Vladimir Cherepanov
    Show details on NVD website

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    CVE-2020-12607 (GCVE-0-2020-12607)

    Vulnerability from cvelistv5 – Published: 2020-06-02 21:00 – Updated: 2024-08-04 12:04
    VLAI
    Summary
    An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA implementation, the point at infinity is mishandled. This means that for an extreme value in k and s^-1, the signature verification fails even if the signature is correct. This behavior is not solely a usability problem. There are some threat models where an attacker can benefit by successfully guessing users for whom signature verification will fail.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    Date Public
    2020-06-01 00:00
    Show details on NVD website

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