CVE-2002-0862: microsoft internet_explorer Improper Certificate Validation

Vulnerability summary

CVE-2002-0862 is a medium (CVSS 6.8) Improper Certificate Validation vulnerability in microsoft internet_explorer. EPSS estimates a 15.76% chance of exploitation in the next 30 days, higher than 96.8% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 10-09-2002
   PublishedVulnerability first disclosed.
2. 08-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-295Improper Certificate ValidationThe product does not validate, or incorrectly validates, a certificate.