Vulnerability identifier: #VU78932

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-25883

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Semver
/

Vendor: npm Inc.

Description

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

The vulnerability exists due to insufficient input validation when processing regular expressions. A remote attacker can pass specially crafted data to the application via the new Range function and perform regular expression denial of service (ReDos) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Semver: 7.0.0 - 7.5.1

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External links
http://github.com/npm/node-semver/commit/717534ee353682f3bcf33e60a8af4292626d4441
http://github.com/npm/node-semver/blob/main/internal/re.js%23L138
http://security.snyk.io/vuln/SNYK-JS-SEMVER-3247795
http://github.com/npm/node-semver/blob/main/internal/re.js%23L160
http://github.com/npm/node-semver/blob/main/classes/range.js%23L97-L104
http://github.com/npm/node-semver/pull/564

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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.