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2 vulnerabilities by antonkueltz
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.
Severity ?
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
Credits
Vladimir Cherepanov
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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
References
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