#VU82608 Improper Verification of Cryptographic Signature in browserify-sign - CVE-2023-46234

Vulnerability identifier: #VU82608

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-46234

CWE-ID: CWE-347

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
browserify-sign
Mobile applications / Libraries for mobile applications

Vendor: browserify

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error in the dsaVerify() function when validating public keys. A remote attacker can construct a public key in a way that it will be accepted as valid by the affected application and perform spoofing attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

browserify-sign: 2.6.0 - 4.2.1

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External links
https://github.com/browserify/browserify-sign/security/advisories/GHSA-x9w5-v3q2-3rhw
https://github.com/browserify/browserify-sign/commit/85994cd6348b50f2fd1b73c54e20881416f44a30
https://lists.debian.org/debian-lts-announce/2023/10/msg00040.html
https://www.debian.org/security/2023/dsa-5539

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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.