CVEvulnerability
CVE-2024-21502
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2024-02-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-457, CWE-908
Description
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.
Affected configurations
• antonkueltz fastecdsa (< 2.3.2)
Related
References
- https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 Exploit, Third Party Advisory
- https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 Broken Link
- https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 Patch
- https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 Exploit, Third Party Advisory
- https://gist.github.com/keltecc/49da037072276f21b005a8337c15db26 Exploit, Third Party Advisory
- https://github.com/AntonKueltz/fastecdsa/blob/v2.3.1/src/curveMath.c%23L210 Broken Link
- https://github.com/AntonKueltz/fastecdsa/commit/57fc5689c95d649dab7ef60cc99ac64589f01e36 Patch
- https://security.snyk.io/vuln/SNYK-PYTHON-FASTECDSA-6262045 Exploit, Third Party Advisory