CVE-2008-2420

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-05-23 · updated 2026-06-16
Weakness: CWE-264

Description

The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers to bypass intended access restrictions by using revoked certificates.

Affected products

stunnel: 3.4a, 3.5, 3.6, 3.7, 3.8, 3.8p1 (+48)

References

http://secunia.com/advisories/30335
http://secunia.com/advisories/30425
http://secunia.com/advisories/31438
http://security.gentoo.org/glsa/glsa-200808-08.xml
http://stunnel.mirt.net/pipermail/stunnel-announce/2008-May/000035.html
http://www.mandriva.com/security/advisories?name=MDVSA-2008:168
http://www.securityfocus.com/bid/29309
http://www.vupen.com/english/advisories/2008/1569/references
https://exchange.xforce.ibmcloud.com/vulnerabilities/42528
https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00856.html
https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00907.html
https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00942.html

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