#VU99563 Improper verification of cryptographic signature in elliptic - CVE-2024-48948

Vulnerability identifier: #VU99563

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-48948

CWE-ID: CWE-347

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
elliptic
Web applications / JS libraries

Vendor: indutny

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect validation of valid signatures if the hash contains at least four leading 0 bytes and when the order of the elliptic curve's base point is smaller than the hash, because of an _truncateToN anomaly. Such behavior leads to valid signatures being rejected.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

elliptic: 6.0.0 - 6.5.7

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External links
http://github.com/indutny/elliptic/pull/322
http://github.com/indutny/elliptic/issues/321
http://github.com/advisories/GHSA-fc9h-whq2-v747

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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.