CVE-2009-3024

CVE-2009-3024 is a medium-severity vulnerability in Io-socket-ssl with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-310.

Key facts

Description

The verify_hostname_of_cert function in the certificate checking feature in IO-Socket-SSL (IO::Socket::SSL) 1.14 through 1.25 only matches the prefix of a hostname when no wildcard is used, which allows remote attackers to bypass the hostname check for a certificate.

Frequently asked questions

What is CVE-2009-3024?
The verify_hostname_of_cert function in the certificate checking feature in IO-Socket-SSL (IO::Socket::SSL) 1.14 through 1.25 only matches the prefix of a hostname when no wildcard is used, which allows remote attackers to bypass the hostname check for a certificate.
How severe is CVE-2009-3024?
CVE-2009-3024 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-3024 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3024?
CVE-2009-3024 primarily affects Io-socket-ssl. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3024?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3024 published?
CVE-2009-3024 was published on 2009-08-31 and last updated on 2026-06-16.

References

Affected products (15)

More vulnerabilities in Io-socket-ssl

All CVEs affecting Io-socket-ssl →

Other CWE-310 (Cryptographic Issues) vulnerabilities

Browse all CWE-310 (Cryptographic Issues) vulnerabilities →