In Apache Tomcat 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12, the refactoring of the HTTP connectors introduced a regression in the send file processing. If the send file processing completed quickly, it was possible for the Processor to be added to the processor cache twice. This could result in the same Processor being used for multiple requests which in turn could lead to unexpected errors and/or response mix-up.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-5651 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | None |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-java-common-tomcat | Not affected |
| Red Hat JBoss Web Server 3 | tomcat7 | Not affected |
| Red Hat JBoss Web Server 3 | tomcat8 | Not affected |
| Red Hat JBoss Portal Platform 6 | jbossweb | Not affected |
| Red Hat JBoss Operations Network 3 | jbossweb | Not affected |
| Red Hat JBoss Fuse Service Works 6 | jbossweb | Not affected |
| Red Hat JBoss Fuse 6 | karaf | Not affected |
| Red Hat JBoss Fuse 6 | jbossweb | Not affected |
| Red Hat JBoss Enterprise SOA Platform 5 | jbossweb | Not affected |
| Red Hat JBoss EWS 2 | tomcat7 | Not affected |
| Red Hat JBoss EWS 2 | tomcat6 | Not affected |
| Red Hat JBoss EAP 6 | tomcat7 | Not affected |
| Red Hat JBoss EAP 5 | jbossweb | Not affected |
| Red Hat JBoss Data Virtualization 6 | jbossweb | Not affected |
| Red Hat JBoss Data Grid 6 | jbossweb | Not affected |
| Red Hat JBoss BRMS 5 | jbossweb | Not affected |
| Red Hat Enterprise Linux 7 | tomcat | Not affected |
| Red Hat Enterprise Linux 6 | tomcat6 | Not affected |
| Red Hat Enterprise Linux 5 | tomcat5 | Not affected |
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