CVE-2006-4339 Weak cryptography in n/a

What is CVE-2006-4339?

CVE-2006-4339 is a medium-severity vulnerability in Openssl Openssl, published on 5 Sep 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying X.509 and other certificates that use PKCS #1.

Weakness: CWE-310

Which versions are affected by CVE-2006-4339?

It affects 1 product.

Products include Openssl Openssl.

How do I fix CVE-2006-4339?

Upgrade to a fixed version.

Is CVE-2006-4339 being exploited?

There is no known exploitation of CVE-2006-4339 in the wild and no public exploit code.

Other vulnerabilities in Openssl Openssl

• CVE-2009-3245 Null dereference in n/a Critical 10.0
• CVE-2006-3738 Memory corruption in n/a Critical 10.0
• CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation Critical 9.8
• CVE-2016-6309 Use after free in n/a Critical 9.8
• CVE-2016-0799 Integer overflow in n/a Critical 9.8

All Openssl Openssl vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2006-4339, DSA-1173-1, DSA-1174-1, GHSA-cw9v-mmf8-gmmr.