CVE-2020-13895 Other in n/a
The Crypt::Perl library fails to properly verify ECDSA signatures with small r/s values, potentially allowing signature verification bypass.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-13895?
CVE-2020-13895 is a high-severity vulnerability in n/a, published on 7 Jun 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-347
Which versions are affected by CVE-2020-13895?
It affects 1 product.
Products include P5-Crypt-Perl Project P5-Crypt-Perl.
How do I fix CVE-2020-13895?
No fix has been published for CVE-2020-13895 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-13895 being exploited?
There is no known exploitation of CVE-2020-13895 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-jxxc-m3fj-q52w.