REDHAT-BUG-1790570
First published: Mon Jan 13 2020(Updated: )
It was discovered that the Kerberos implementation in the Security component of OpenJDK used RSA-MD5 checksum in Ticket Granting Service (TGS) requests even though MD5 algorithm is no longer considered safe for such use case. A remote attacker could possibly use this flaw to manipulate TGS requests.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenJDK 17 |
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Reference Links
- https://www.oracle.com/security-alerts/cpujan2020.html#AppendixJAVA
- https://access.redhat.com/errata/RHSA-2020:0128
- https://access.redhat.com/errata/RHSA-2020:0122
- https://access.redhat.com/errata/RHSA-2020:0157
- https://access.redhat.com/errata/RHSA-2020:0196
- https://access.redhat.com/errata/RHSA-2020:0202
- https://access.redhat.com/errata/RHSA-2020:0231
- https://access.redhat.com/errata/RHSA-2020:0232
- https://access.redhat.com/errata/RHSA-2020:0541
- http://hg.openjdk.java.net/jdk7u/jdk7u/jdk/rev/42545cbbd2e6
- http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/2c97a7a401c6
- http://hg.openjdk.java.net/jdk-updates/jdk11u/rev/e55db875d0ed
- https://access.redhat.com/errata/RHSA-2020:0632
- https://access.redhat.com/security/cve/cve-2020-2601
- https://access.redhat.com/errata/RHSA-2020:3386
- https://access.redhat.com/errata/RHSA-2020:3388
- https://access.redhat.com/errata/RHSA-2020:3387
- https://access.redhat.com/errata/RHSA-2020:5585
- https://bugzilla.redhat.com/show_bug.cgi?id=1790570
Frequently Asked Questions
What is the severity of REDHAT-BUG-1790570?
The severity of REDHAT-BUG-1790570 is rated as critical due to the potential for remote attackers to manipulate Ticket Granting Service requests.
How do I fix REDHAT-BUG-1790570?
To mitigate REDHAT-BUG-1790570, update to a version of OpenJDK that has eliminated the use of the deprecated RSA-MD5 checksum in TGS requests.
Which versions of OpenJDK are affected by REDHAT-BUG-1790570?
REDHAT-BUG-1790570 affects specific versions of Oracle OpenJDK, particularly those using the vulnerable Kerberos implementation.
What type of attack does REDHAT-BUG-1790570 enable?
REDHAT-BUG-1790570 enables remote attackers to possibly manipulate Ticket Granting Service requests due to the insecure MD5 checksum.
How can I check if I am using an affected version related to REDHAT-BUG-1790570?
To check if you are using an affected version related to REDHAT-BUG-1790570, confirm your OpenJDK version against known vulnerabilities in security advisories.
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- canonical/openjdk 17