What’s Vulnerable › Vulnerabilities

CVE-2005-2946

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2005-09-16 · updated 2026-06-16
• Weakness: CWE-327

Description

The default configuration on OpenSSL before 0.9.8 uses MD5 for creating message digests instead of a more cryptographically strong algorithm, which makes it easier for remote attackers to forge certificates with a valid certificate authority signature.

Affected products

• Canonical Ubuntu Linux: 4.10, 5.04
• OpenSSL: before 0.9.8 — fixed in 0.9.8

How to fix

Upgrade to a fixed version: OpenSSL 0.9.8. Check the vendor advisory for mitigations.

References

• http://www.cits.rub.de/MD5Collisions/
• http://www.ubuntu.com/usn/usn-179-1
• https://bugzilla.ubuntu.com/show_bug.cgi?id=13593
• http://www.cits.rub.de/MD5Collisions/
• http://www.ubuntu.com/usn/usn-179-1
• https://bugzilla.ubuntu.com/show_bug.cgi?id=13593

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