GLSA 202105-02: stunnel: Improper certificate validation
| Severity: | low |
| Title: | stunnel: Improper certificate validation |
| Date: | 05/26/2021 |
| Bugs: | |
| ID: | 202105-02 |
Synopsis
Stunnel was not properly verifying TLS certificates, possibly allowing an integrity/confidentiality compromise.Background
The stunnel program is designed to work as an SSL/TLS encryption wrapper between a client and a local or remote server.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-misc/stunnel | < 5.58 | >= 5.58 | All supported architectures |
Description
It was discovered that stunnel did not correctly verified the client certificate when options “redirect” and “verifyChain” are used.
Impact
A remote attacker could send a specially crafted certificate, possibly resulting in a breach of integrity or confidentiality.
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-5.58"
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.