REDHAT-BUG-1443083
First published: Tue Apr 18 2017(Updated: )
It was discovered that the FTP client implementation in the Networking component of OpenJDK failed to correctly handle user inputs (e.g. usernames and passwords) containing newline characters. A remote attacker could possibly use this flaw to manipulate an FTP connection opened by a Java application if it could make it access a specially crafted FTP URL. Blog posts were published that describe how to use this flaw to open ports on firewalls using active FTP connections: <a href="http://blog.blindspotsecurity.com/2017/02/advisory-javapython-ftp-injections.html">http://blog.blindspotsecurity.com/2017/02/advisory-javapython-ftp-injections.html</a> and sending mails during XML parsing when use of XML external entities is allowed: <a href="https://shiftordie.de/blog/2017/02/18/smtp-over-xxe/">https://shiftordie.de/blog/2017/02/18/smtp-over-xxe/</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenJDK 17 |
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Reference Links
- http://blog.blindspotsecurity.com/2017/02/advisory-javapython-ftp-injections.html
- https://shiftordie.de/blog/2017/02/18/smtp-over-xxe/
- http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html#AppendixJAVA
- http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/81ddd5fc5a4e
- https://access.redhat.com/errata/RHSA-2017:1109
- https://access.redhat.com/errata/RHSA-2017:1108
- https://access.redhat.com/errata/RHSA-2017:1118
- https://access.redhat.com/errata/RHSA-2017:1117
- https://access.redhat.com/errata/RHSA-2017:1119
- https://access.redhat.com/errata/RHSA-2017:1204
- https://access.redhat.com/errata/RHSA-2017:1222
- https://access.redhat.com/errata/RHSA-2017:1221
- https://access.redhat.com/errata/RHSA-2017:1220
- https://access.redhat.com/errata/RHSA-2017:3453
- https://bugzilla.redhat.com/show_bug.cgi?id=1443083
Frequently Asked Questions
What is the severity of REDHAT-BUG-1443083?
The severity of REDHAT-BUG-1443083 is considered high due to the potential for remote exploitation.
How do I fix REDHAT-BUG-1443083?
To fix REDHAT-BUG-1443083, upgrade to the latest version of OpenJDK that addresses this vulnerability.
What is the impact of REDHAT-BUG-1443083?
The impact of REDHAT-BUG-1443083 could allow a remote attacker to manipulate FTP connections using crafted user inputs.
Which versions of OpenJDK are affected by REDHAT-BUG-1443083?
REDHAT-BUG-1443083 affects specific versions of OpenJDK, particularly those prior to the release that includes the fix.
How can I verify if my system is vulnerable to REDHAT-BUG-1443083?
To verify your system's vulnerability to REDHAT-BUG-1443083, check if the OpenJDK version running on your system is listed as affected.
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