Vulnerability identifier: #VU46673

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-17145

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Bitcoin Core
Other software / Other software solutions
Bitcoin Knots
Server applications / Other server solutions

Vendor: Bitcoin
Bitcoin Knots

Description

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

The vulnerability exists due to improper management of internal resources with the applicatoin. A remote attacker can flood the application with multiple transaction inv messages with random hashes and perform a denial of service (DoS) attack, aka INVDoS.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Bitcoin Core: 0.16.0 - 0.16.1

Bitcoin Knots: 0.16.0 - 0.16.1

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External links
http://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2018-17145
http://github.com/bitcoin/bitcoin/blob/v0.16.2/doc/release-notes.md
http://invdos.net
http://invdos.net/paper/CVE-2018-17145.pdf

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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. However, proof of concept for this vulnerability is available.