Cryptographic issues in elliptic package for npm

1) Cryptographic issues

EUVDB-ID: #VU29196

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13822

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to comrpomise the target system.

The vulnerability exists due to the affected software allows ECDSA signature malleability via variations in encoding, leading "\0" bytes, or integer overflows. A remote attacker can cause a security-relevant impact if an application relied on a single canonical signature.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

elliptic: 6.5.2

External links

http://github.com/indutny/elliptic/issues/226
http://medium.com/@herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
http://www.npmjs.com/package/elliptic
http://yondon.blog/2019/01/01/how-not-to-use-ecdsa/
http://www.npmjs.com/advisories/1547

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.