Regular expression denial of service in semver

1) Incorrect Regular Expression

EUVDB-ID: #VU78932

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 - Incorrect Regular Expression

Exploit availability: No

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

CPE2.3

• cpe:2.3::npm:semver:7.0.0:*:*:*:*:*:*:*
• cpe:2.3::npm:semver:7.1.0:*:*:*:*:*:*:*
• cpe:2.3::npm:semver:7.1.1:*:*:*:*:*:*:*

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

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.