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CVE-2023-5594— Improper following of a certificate's chain of trust in ESET security products

Quick assessment

Affected
ESET, spol. s r.o. ESET NOD32 Antivirus
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.

ESET Security Ultimate是斯洛伐克ESET公司的一个完整的安全解决方案。 部分ESET产品存在安全漏洞，该漏洞源于服务器证书链验证不当，使用 MD5 或 SHA1 算法签名的中间证书被视为受信任，因此启用了 ESET 安全流量扫描功能的系统上的浏览器可能会信任使用此类证书保护的站点，以下产品和版本受到影响：ESET NOD32 Antivirus、ESET Internet Security、ESET Smart Security Premium、ESET Security Ultim

CVSS 7.5 · High EPSS 0.38% · P29

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2023-5594

Vulnerability Information
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Vulnerability Title
Improper following of a certificate's chain of trust in ESET security products
Source: CVE Program / CVE List V5
Vulnerability Description
Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
部分ESET产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ESET Security Ultimate是斯洛伐克ESET公司的一个完整的安全解决方案。 部分ESET产品存在安全漏洞，该漏洞源于服务器证书链验证不当，使用 MD5 或 SHA1 算法签名的中间证书被视为受信任，因此启用了 ESET 安全流量扫描功能的系统上的浏览器可能会信任使用此类证书保护的站点，以下产品和版本受到影响：ESET NOD32 Antivirus、ESET Internet Security、ESET Smart Security Premium、ESET Security Ultim
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
ESET, spol. s r.o. ESET NOD32 Antivirus - -
ESET, spol. s r.o. ESET Internet Security - -
ESET, spol. s r.o. ESET Smart Security Premium - -
ESET, spol. s r.o. ESET Security Ultimate - -
ESET, spol. s r.o. ESET Endpoint Antivirus - -
ESET, spol. s r.o. ESET Endpoint Security - -
ESET, spol. s r.o. ESET Endpoint Antivirus for Linux 10.0 and above - -
ESET, spol. s r.o. ESET Server Security for Windows Server - -
ESET, spol. s r.o. ESET Mail Security for Microsoft Exchange Server - -
ESET, spol. s r.o. ESET Mail Security for IBM Domino - -
ESET, spol. s r.o. ESET Security for Microsoft SharePoint Server - -
ESET, spol. s r.o. ESET File Security for Microsoft Azure - -
ESET, spol. s r.o. ESET Server Security for Linux 10.1 and above - -

II. Public POCs for CVE-2023-5594

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2023-5594

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Other References for CVE-2023-5594 (1)

IV. Related Vulnerabilities

Same product: ESET NOD32 Antivirus
Same vendor: ESET, spol. s r.o.
Same weakness: CWE-295

V. Comments for CVE-2023-5594

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