ecdsautils is a tiny collection of programs used for ECDSA (keygen, sign, verify). `ecdsa_verify_[prepare_]legacy()` does not check whether the signature values `r` and `s` are non-zero. A signature consisting only of zeroes is always considered valid, making it trivial to forge signatures. Requiring multiple signatures from different public keys does not mitigate the issue: `ecdsa_verify_list_legacy()` will accept an arbitrary number of such forged signatures. Both the `ecdsautil verify` CLI command and the libecdsautil library are affected. The issue has been fixed in ecdsautils 0.4.1. All older versions of ecdsautils (including versions before the split into a library and a CLI utility) are vulnerable.
References
Configurations
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Information
Published : 2022-05-05 17:15
Updated : 2022-05-16 11:08
NVD link : CVE-2022-24884
Mitre link : CVE-2022-24884
JSON object : View
CWE
CWE-347
Improper Verification of Cryptographic Signature
Products Affected
fedoraproject
- fedora
debian
- debian_linux
ecdsautils_project
- ecdsautils