Spoofing attack in browserify-sign

1) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU82608

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46234

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

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

External links

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

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.