Vulnerability identifier: #VU84356

Vulnerability risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-40257

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Bitcoin Knots
Server applications / Other server solutions

Vendor: Bitcoin Knots

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to an unspecified error in the extended rpcauth wallet-restriction syntax, which is intended to enable semi-trusted local applications using the Bitcoin Knots API to access only specific wallets and not others. A local user can bypass implemented security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Bitcoin Knots: 0.12.0 - 23.0

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External links
http://github.com/bitcoinknots/bitcoin/blob/aed49ce8989334c364a219a6eb016a3897d4e3d7/doc/release-notes.md

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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