Code Injection in mimblewimble Grin

1) Code Injection

EUVDB-ID: #VU31151

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9195

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in directory traversal in a ZIP archive. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update to version 1.0.2.

Vulnerable software versions

Grin: 1.0.0 - 1.0.1

External links

http://github.com/mimblewimble/grin/pull/2624
http://github.com/mimblewimble/grin/releases/tag/v1.0.2
http://www.grin-forum.org/t/critical-vulnerability-in-grin-1-0-1-and-older-fixed-in-1-0-2/4343

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.