An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-1336 from the MITRE CVE dictionary dictionary and NIST NVD.
Fuse 6.3 and 7 standalone distributions ship but do not use tomcat, and as such are not affected by this flaw; however, Fuse Integration Services 2.0 and Fuse 7 on OpenShift provide the affected artifacts via their respective maven repositories, and will provide fixes for this issue in a future release.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat JBoss Web Server 5.0 on RHEL 7 | RHEA-2018:2188 | 2018-07-12 |
| Red Hat JBoss Web Server 5.0 on RHEL 6 | RHEA-2018:2189 | 2018-07-12 |
| Red Hat JBoss Enterprise Application Platform 6 for RHEL 5 Server (jbossweb) | RHSA-2018:2742 | 2018-09-24 |
| Red Hat JBoss Enterprise Application Platform 6.3 for RHEL 7 Server (jbossweb) | RHSA-2018:2741 | 2018-09-24 |
| Red Hat Enterprise Linux 7 (tomcat) | RHSA-2018:2921 | 2018-10-16 |
| Red Hat JBoss Fuse 7 | RHSA-2018:3768 | 2018-12-04 |
| Red Hat OpenShift Application Runtimes 1.0 | RHSA-2018:2945 | 2018-10-18 |
| Red Hat JBoss Web Server 3.1 for RHEL 7 | RHSA-2018:2701 | 2018-09-12 |
| Red Hat JBoss Enterprise Application Platform 6 for RHEL 6 Server (jbossweb) | RHSA-2018:2743 | 2018-09-24 |
| Red Hat JBoss Web Server 3.1 for RHEL 6 | RHSA-2018:2701 | 2018-09-12 |
| Red Hat JBoss Operations Network 3.3 | RHSA-2018:2930 | 2018-10-16 |
| Red Hat JBoss Enterprise Application Platform 6.4 | RHSA-2018:2740 | 2018-09-24 |
| Red Hat JBoss Fuse 6.3 | RHSA-2018:2939 | 2018-10-17 |
| Red Hat JBoss Web Server 3.1 | RHSA-2018:2700 | 2018-09-12 |
| Platform | Package | State |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-java-common-tomcat | Not affected |
| Red Hat JBoss Fuse Service Works 6 | jbossweb | Affected |
| Red Hat JBoss Enterprise SOA Platform 5 | jbossweb | Not affected |
| Red Hat JBoss EWS 2 | tomcat7 | Will not fix |
| Red Hat JBoss EWS 2 | tomcat6 | Not affected |
| Red Hat JBoss EAP 5 | jbossweb | Not affected |
| Red Hat JBoss Data Virtualization 6 | jbossweb | Affected |
| Red Hat JBoss Data Grid 7 | tomcat | Not affected |
| Red Hat JBoss Data Grid 6 | jbossweb | Not affected |
| Red Hat JBoss BRMS 6 | tomcat | Not affected |
| Red Hat JBoss BRMS 5 | jbossweb | Not affected |
| Red Hat JBoss BPMS 6 | tomcat | Not affected |
| Red Hat Enterprise Linux 6 | tomcat6 | Not affected |
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