#VU12573 Resource exhaustion in Node.js - CVE-2018-7158

Vulnerability identifier: #VU12573

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-7158

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the splitPathRe regular expression used in the core Node.js path module for POSIX path parsing functions due to resource exhaustion. A remote attacker can cause the service to crash by taking a non-trivial amount of time to parse the value against the RegEx.

Mitigation
Update to version 4.9.0.

Vulnerable software versions

Node.js: 4.8.0 - 4.8.7

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External links
https://nodesource.com/blog/node-js-security-release-summary-march-2018/

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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.