// For flags

CVE-2002-0862

Microsoft Internet Explorer 5/6 / Konqueror 2.2.2/3.0 / Weblogic Server 5/6/7 - Invalid X.509 Certificate Chain

Severity Score

6.8
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.

Las APIs (Application Programming Interface)

CertGetCertificateChain
CertVerifyCertificateChainPolicy
WinVerifyTrust

en la CriptoAPI de productos de Microsoft, incluyendo Microsoft Windows 98 a XP, Office para Mac, Internet Explorer para Mac, y Outlook Express para Mac, no verifican adecuadamente las restricciones básicas de certificados X.509 firmados por CAs (Autoridad Certificadora) intermedias, lo que permite a atacantes remotos falsear los certificados de sitios de confianza mediante un ataque tipo hombre-en-el-medio en sesiones SSL, como se informó anteriormente para Internet Explorer e IIS.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2002-08-06 First Exploit
  • 2002-08-15 CVE Reserved
  • 2002-09-10 CVE Published
  • 2024-02-09 EPSS Updated
  • 2024-08-08 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-295: Improper Certificate Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
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Internet Explorer
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--
Affected
in Apple
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Macos
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--
Safe
Microsoft
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Office
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--
Affected
in Apple
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Macos
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--
Safe
Microsoft
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Outlook Express
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--
Affected
in Apple
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Macos
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Safe
Microsoft
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Windows 2000
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--
Affected
Microsoft
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Windows 98
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Affected
Microsoft
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Windows 98se
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Affected
Microsoft
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Windows Me
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Affected
Microsoft
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Windows Nt
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4.0
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-
Affected
Microsoft
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Windows Nt
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4.0
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terminal_server
Affected
Microsoft
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Windows Xp
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--
Affected