#VU50047 Incorrect calculation in Go programming language - CVE-2021-3114

Vulnerability identifier: #VU50047

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3114

CWE-ID: CWE-682

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Go programming language
Universal components / Libraries / Scripting languages

Vendor: Google

Description

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

The vulnerability exists due to incorrect calculation performed by the application in "crypto/elliptic/p224.go". A remote attacker can generate incorrect outputs, related to an underflow of the lowest limb during the final complete reduction in the P-224 field.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.14.1 - 1.15.6

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External links
https://github.com/golang/go/commit/d95ca9138026cbe40e0857d76a81a16d03230871
https://groups.google.com/g/golang-announce/c/mperVMGa98w

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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.