Improper input validation in PostCSS



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-44270
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Postcss
Other
Vendor Postcss

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU81307

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-44270

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to insufficient validation of external CSS files when parsing the "\r" character. A remote attacker can pass specially crafted input to the application and perform spoofing attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Postcss: 8.0.0 - 8.4.30

CPE2.3 External links

https://github.com/postcss/postcss/blob/main/lib/tokenize.js#L25
https://github.com/postcss/postcss/commit/58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5
https://github.com/postcss/postcss/releases/tag/8.4.31


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.



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