medium
6.8
CWE
264
Advisory Published
Updated

CVE-2008-2420

First published: Fri May 23 2008(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
stunnel=4.21
stunnel=4.13
stunnel=4.02
stunnel=4.20
stunnel=4.00
stunnel=3.21c
stunnel=3.7
stunnel=4.07
stunnel=4.09
stunnel=3.8p1
stunnel=3.6
stunnel=4.18
stunnel=4.15
stunnel=3.21b
stunnel=3.14
stunnel=3.4a
stunnel=3.22
stunnel=3.18
stunnel=3.20
stunnel=4.12
stunnel=4.04
stunnel=3.15
stunnel=4.05
stunnel=3.24
stunnel=3.11
stunnel=3.8
stunnel=4.22
stunnel=3.21
stunnel=3.8p4
stunnel=4.14
stunnel=3.13
stunnel=4.16
stunnel=3.23
stunnel=3.17
stunnel=3.5
stunnel=4.19
stunnel=4.10
stunnel=3.8p3
stunnel=3.8p2
stunnel=4.17
stunnel=3.10
stunnel=3.16
stunnel=3.9
stunnel=3.12
stunnel=3.21a
stunnel=4.23
stunnel=4.08
stunnel=3.26
stunnel=4.06
stunnel=3.25
stunnel=4.11
stunnel=4.01
stunnel=4.03
stunnel=3.19

Remedy

http://www.securityfocus.com/bid/29309

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2008-2420?

    CVE-2008-2420 has a medium severity rating due to its potential to allow attackers to access restricted resources using revoked certificates.

  • How do I fix CVE-2008-2420?

    To fix CVE-2008-2420, upgrade to stunnel version 4.24 or later, which includes a patch for the vulnerability.

  • What systems are affected by CVE-2008-2420?

    CVE-2008-2420 affects stunnel versions 4.21 and earlier, as well as several older versions below 4.24.

  • What kind of attack does CVE-2008-2420 allow?

    CVE-2008-2420 allows remote attackers to bypass access restrictions by exploiting defective handling of revoked certificates.

  • When was CVE-2008-2420 disclosed?

    CVE-2008-2420 was disclosed in May 2008, highlighting a significant flaw in the OCSP functionality of certain stunnel versions.

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