Crypt::Perl::ECDSA in the Crypt::Perl (aka p5-Crypt-Perl) module before 0.32 for Perl fails to verify correct ECDSA signatures when r and s are small and when s = 1. This happens when using the curve secp256r1 (prime256v1). This could conceivably have a security-relevant impact if an attacker wishes to use public r and s values when guessing whether signature verification will fail.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | 2.8 | 5.9 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-347,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| p5-crypt-perl_project | p5-crypt-perl | * |
ECDSA/EC/Point.pm in Crypt::Perl before 0.33 does not properly consider timing attacks against the EC point multiplication algorithm.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | 3.9 | 3.6 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-203,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| p5-crypt-perl_project | p5-crypt-perl | * |