PT-2009-3294 · Openssl · Openssl

Published 2009-02-20 · Updated 2009-06-25 · CVE-2009-0653

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions OpenSSL version 0.9.6

Description The issue allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack because it does not verify the Basic Constraints for an intermediate CA-signed certificate.

Recommendations For OpenSSL version 0.9.6, update to a version that verifies the Basic Constraints for an intermediate CA-signed certificate to prevent man-in-the-middle attacks.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2009-0653

Affected Products

Openssl

References · 7

• 🔥 https://blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2009-0653 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2009-0653 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2009-0653 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2009-0653 · Vendor Advisory
• http://blackhat.com/html/bh-dc-09/bh-dc-09-speakers.html#Marlinspike · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0653 · Note