PT-2021-27321 · Stunnel · Stunnel
Published
2021-01-25
·
Updated
2021-01-25
None
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Name of the Vulnerable Software and Affected Versions:
stunnel versions prior to 5.57
Description:
The issue fixed in stunnel involves the 'redirect' option, which was not properly handling 'verifyChain = yes'. This update also includes security bugfixes, new features such as a new securityLevel configuration file option, support for modern PostgreSQL clients, and TLS 1.3 configuration updates for better compatibility. Additionally, several bugfixes were implemented, including fixes for a transfer() loop bug, memory leaks on configuration reloading errors, and thread safety fixes in SSL SESSION object handling.
Recommendations:
For stunnel versions prior to 5.57, update to version 5.57 or later to resolve the issue. As a temporary workaround, consider disabling the 'redirect' option until a patch is available. Restrict access to the stunnel configuration file to minimize the risk of exploitation. Avoid using the
verifyChain option in the stunnel configuration file until the issue is resolved. Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Stunnel