CVE-2009-3024

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-08-31 · updated 2026-06-16
Weakness: CWE-310

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.

Affected products

Io-Socket-Ssl: 1.14, 1.15, 1.16, 1.16_1, 1.16_2, 1.16_3 (+9)

References

http://cpansearch.perl.org/src/SULLR/IO-Socket-SSL-1.30/Changes
http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
http://secunia.com/advisories/42893
http://www.gentoo.org/security/en/glsa/glsa-201101-06.xml
http://www.openwall.com/lists/oss-security/2009/08/28/1
http://www.openwall.com/lists/oss-security/2009/08/29/1
http://www.openwall.com/lists/oss-security/2009/08/31/4
http://www.vupen.com/english/advisories/2011/0118
http://cpansearch.perl.org/src/SULLR/IO-Socket-SSL-1.30/Changes
http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
http://secunia.com/advisories/42893
http://www.gentoo.org/security/en/glsa/glsa-201101-06.xml

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