Vulnerability · Published Dec 14, 2021 · Assigned by apache
CVE-2021-44549SMTPS server hostname not checked when making TLS connection to SMTPS server
High 7.4
In plain English
A high-severity improper certificate validation in Apache Sling Commons Messaging Mail from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Apache Sling Commons Messaging Mail provides a simple layer on top of JavaMail/Jakarta Mail for OSGi to send mails via SMTPS. To reduce the risk of "man in the middle" attacks additional server identity checks must be performed when accessing mail servers. For compatibility reasons these additional checks are disabled by default in JavaMail/Jakarta Mail. The SimpleMailService in Apache Sling Commons Messaging Mail 1.0 lacks an option to enable these checks for the shared mail session. A user could enable these checks nevertheless by accessing the session via the message created by SimpleMessageBuilder and setting the property mail.smtps.ssl.checkserveridentity to true. Apache Sling Commons Messaging Mail 2.0 adds support for enabling server identity checks and these checks are enabled by default. - https://javaee.github.io/javamail/docs/SSLNOTES.txt - https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html - https://github.com/eclipse-ee4j/mail/issues/429
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.sling:org.apache.sling.commons.messaging.mail | 2.0 | GHSA-c69w-jj56-834w |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Sling Commons Messaging Mail | Apache Sling Commons Messaging Mail 1.0.0 1.0.0 |
Weakness: CWE-295
References
- https://lists.apache.org/thread/l8p9h2bqvkj6rhv4w8kzctb817415b7f x_refsource_MISC