#VU78932 Incorrect Regular Expression in Semver - CVE-2022-25883

Vulnerability identifier: #VU78932

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