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CVE-2023-46234— browserify-sign vulnerable via an upper bound check issue in `dsaVerify` that leads to a signature forgery attack

Quick assessment

Affected
browserify browserify-sign
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

browserify-sign是一个用于复制节点加密公钥功能的包。 browserify-sign 存在安全漏洞，该漏洞源于dsaVerify函数中的上限检查存在问题，允许攻击者可以通过任何公钥成功验证签名，从而导致签名伪造攻击。

CVSS 6.5 · Medium EPSS 0.51% · P42

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-46234

Vulnerability Information
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Vulnerability Title
browserify-sign vulnerable via an upper bound check issue in `dsaVerify` that leads to a signature forgery attack
Source: CVE Program / CVE List V5
Vulnerability Description
browserify-sign is a package to duplicate the functionality of node's crypto public key functions, much of this is based on Fedor Indutny's work on indutny/tls.js. An upper bound check issue in `dsaVerify` function allows an attacker to construct signatures that can be successfully verified by any public key, thus leading to a signature forgery attack. All places in this project that involve DSA verification of user-input signatures will be affected by this vulnerability. This issue has been patched in version 4.2.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
browserify-sign 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
browserify-sign是一个用于复制节点加密公钥功能的包。 browserify-sign 存在安全漏洞，该漏洞源于dsaVerify函数中的上限检查存在问题，允许攻击者可以通过任何公钥成功验证签名，从而导致签名伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
browserify browserify-sign >= 2.6.0, <= 4.2.1 -

II. Public POCs for CVE-2023-46234

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III. Intelligence Information for CVE-2023-46234

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Patches & Fixes for CVE-2023-46234 (1)

Vendor Advisories for CVE-2023-46234 (2)

Mailing List Discussions for CVE-2023-46234 (3)

IV. Related Vulnerabilities

Same vendor: browserify
Same weakness: CWE-347

V. Comments for CVE-2023-46234

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