CVE-2005-2531
Medium
Description
OpenVPN before 2.0.1, when running with "verb 0" and without TLS authentication, does not properly flush the OpenSSL error queue when a client fails certificate authentication to the server and causes the error to be processed by the wrong client, which allows remote attackers to cause a denial of service (client disconnection) via a large number of failed authentication attempts.
SeverityMedium
CVSS5.0
Exploit probability—
ProductOpenvpn
PublishedAug 24, 2005
First seenAug 24, 2005
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openvpn openvpn | 2.0, 2.0.1_rc1, 2.0.1_rc2, 2.0.1_rc3, 2.0.1_rc4, 2.0.1_rc5, 2.0.1_rc6, 2.0.1_rc7, 2.0_beta1, 2.0_beta2, 2.0_beta3, 2.0_beta4, 2.0_beta5, 2.0_beta6, 2.0_beta7, 2.0_beta8, 2.0_beta9, 2.0_beta10, 2.0_beta11, 2.0_beta12, 2.0_beta13, 2.0_beta15, 2.0_beta16, 2.0_beta17, 2.0_beta18, 2.0_beta19, 2.0_beta20, 2.0_beta28, 2.0_rc1, 2.0_rc2, 2.0_rc3, 2.0_rc4, 2.0_rc5, 2.0_rc6, 2.0_rc7, 2.0_rc8, 2.0_rc9, 2.0_rc10, 2.0_rc11, 2.0_rc12, 2.0_rc13, 2.0_rc14, 2.0_rc15, 2.0_rc16, 2.0_rc17, 2.0_rc18, 2.0_rc19, 2.0_rc20, 2.0_rc21, 2.0_test1, 2.0_test2, 2.0_test3, 2.0_test5, 2.0_test6, 2.0_test7, 2.0_test8, 2.0_test9, 2.0_test10, 2.0_test11, 2.0_test12, 2.0_test14, 2.0_test15, 2.0_test16, 2.0_test17, 2.0_test18, 2.0_test19, 2.0_test20, 2.0_test21, 2.0_test22, 2.0_test23, 2.0_test24, 2.0_test26, 2.0_test27, 2.0_test29 | — |
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