Crypt::Perl up to 0.31 on Perl ECDSA Signature Validation Crypt::Perl::ECDSA signature verification

Summaryinfo

A vulnerability classified as critical has been found in Crypt::Perl up to 0.31 on Perl. This impacts the function Crypt::Perl::ECDSA of the component ECDSA Signature Validation. This manipulation causes signature verification. This vulnerability appears as CVE-2020-13895. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Crypt::Perl up to 0.31 on Perl (Programming Language Software) and classified as critical. Affected by this vulnerability is the function Crypt::Perl::ECDSA of the component ECDSA Signature Validation. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented 06/07/2020. This vulnerability is known as CVE-2020-13895 since 06/07/2020. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 0.32 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Name

• Crypt::Perl

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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CVSSv3info

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Entryinfo

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