Vulnerability identifier: #VU34412

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12439

CWE-ID: CWE-404

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Grin
Web applications / Modules and components for CMS

Vendor: mimblewimble

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Grin: 3.0.0

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External links
http://github.com/mimblewimble/grin/issues/3235
http://github.com/mimblewimble/grin/pull/3236
http://github.com/mimblewimble/grin-security/blob/master/CVEs/CVE-2020-12439.md

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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.