#VU63701 Use of a broken or risky cryptographic algorithm in elliptic - CVE-2020-28498

Vulnerability identifier: #VU63701

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-28498

CWE-ID: CWE-327

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
elliptic
Web applications / JS libraries

Vendor: indutny

Description
The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to cryptographic issues in the secp256k1 implementation in elliptic/ec/key.js. A remote attacker can pass specially crafted public key point to the application and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

elliptic: 0.1.0 - 6.5.3

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External links
https://github.com/christianlundkvist/blog/blob/master/2020_05_26_secp256k1_twist_attacks/secp256k1_twist_attacks.md
https://github.com/indutny/elliptic/commit/441b7428b0e8f6636c42118ad2aaa186d3c34c3f
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1069836
https://snyk.io/vuln/SNYK-JS-ELLIPTIC-1064899

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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.