GLSA 200808-08: stunnel: Security bypass
| Severity: | low |
| Title: | stunnel: Security bypass |
| Date: | 08/08/2008 |
| Bugs: | |
| ID: | 200808-08 |
Synopsis
stunnel does not properly prevent the authentication of a revoked certificate which would be published by OCSP.Background
The stunnel program is designed to work as an SSL encryption wrapper between a remote client and a local or remote server. OCSP (Online Certificate Status Protocol), as described in RFC 2560, is an internet protocol used for obtaining the revocation status of an X.509 digital certificate.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-misc/stunnel | < 4.24 | >= 4.24 | All supported architectures |
Description
An unspecified bug in the OCSP search functionality of stunnel has been discovered.
Impact
A remote attacker can use a revoked certificate that would be successfully authenticated by stunnel. This issue only concerns the users who have enabled the OCSP validation in stunnel.
Workaround
There is no known workaround at this time.
Resolution
All stunnel users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/stunnel-4.24"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.