Incorrect Regular Expression in hosted-git-info - CVE-2021-23362
Published: March 11, 2022
Vulnerability identifier: #VU61255
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-23362
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: npm Inc.
Affected software:
hosted-git-info
hosted-git-info
Detailed vulnerability 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 expression "shortcutMatch" in the "fromUrl" function. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
How to mitigate CVE-2021-23362
Install update from vendor's website.
Sources
- https://github.com/npm/hosted-git-info/commit/bede0dc38e1785e732bf0a48ba6f81a4a908eba3
- https://snyk.io/vuln/SNYK-JS-HOSTEDGITINFO-1088355
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1088356
- https://github.com/npm/hosted-git-info/commits/v2
- https://github.com/npm/hosted-git-info/commit/29adfe5ef789784c861b2cdeb15051ec2ba651a7
- https://github.com/npm/hosted-git-info/commit/8d4b3697d79bcd89cdb36d1db165e3696c783a01