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AUSCERT External Security Bulletin Redistribution
ESB-2018.3869.2
K73008537: Apache Tomcat vulnerability
30 January 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1336
Reference: ESB-2018.3703
ESB-2018.3129
ESB-2018.2563
ESB-2018.2162
Original Bulletin:
https://support.f5.com/csp/article/K73008537
Revision History: January 30 2020: Vendor updated advisory
December 14 2018: Initial Release
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K73008537:Apache Tomcat vulnerability CVE-2018-1336
Security Advisory
Original Publication Date: 11 Sep, 2018
Latest Publication Date: 28 Jan, 2020
Security Advisory Description
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. (CVE-2018-1336)
Impact
BIG-IP and Traffix SDC
A remote attacker can exploit this vulnerability with carefully crafted data
and cause a denial of service (DoS) on the target system.
Enterprise Manager, BIG-IQ, and iWorkflow
There is no impact; these F5 products are not affected by this vulnerability.
Security Advisory Status
F5 Product Development has assigned ID 738735 (BIG-IP) and ID CPF-24965 and
CPF-24966 (Traffix SDC) to this vulnerability. Additionally, F5 iHealth may
list Heuristic H73008537 on the Diagnostics > Identified > High page.
To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. To determine if your
release is known to be vulnerable, the components or features that are affected
by the vulnerability, and for information about releases or hotfixes that
address the vulnerability, refer to the following table. For more information
about security advisory versioning, refer to K51812227: Understanding Security
Advisory versioning.
+------------------+------+----------+----------+-----------+------+----------+
| | |Versions |Fixes | |CVSSv3|Vulnerable|
|Product |Branch|known to |introduced|Severity |score^|component |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+------------------+------+----------+----------+-----------+------+----------+
| |14.x |14.0.0 |14.1.0 | | | |
| | | |14.0.1.1 | | | |
|BIG-IP (LTM, AAM, +------+----------+----------+ | | |
|AFM, Analytics, |13.x |13.1.0 - |None | | | |
|APM, ASM, DNS, | |13.1.3 | | | |TMUI/ |
|Edge Gateway, FPS,+------+----------+----------+High |7.5 |Tomcat |
|GTM, Link |12.x |None |Not | | | |
|Controller, PEM, | | |applicable| | | |
|WebAccelerator) +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+------------------+------+----------+----------+-----------+------+----------+
| | | |Not |Not | | |
|Enterprise Manager|3.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+------------------+------+----------+----------+-----------+------+----------+
| |6.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+Not | | |
|BIG-IQ Centralized|5.x |None |Not |vulnerable^|None |None |
|Management | | |applicable|2 | | |
| +------+----------+----------+ | | |
| |4.x |None |Not | | | |
| | | |applicable| | | |
+------------------+------+----------+----------+-----------+------+----------+
|BIG-IQ Cloud and | | |Not |Not | | |
|Orchestration |1.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+------------------+------+----------+----------+-----------+------+----------+
| | | |Not |Not | | |
|F5 iWorkflow |2.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+------------------+------+----------+----------+-----------+------+----------+
| |5.x |5.0.0 - |None | | | |
|Traffix SDC | |5.1.0 | |Medium |6.2 |Apache |
| +------+----------+----------+ | |Tomcat |
| |4.x |4.4.0 |None | | | |
+------------------+------+----------+----------+-----------+------+----------+
^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
^2The specified products contain the affected code. However, F5 identifies the
vulnerability status as Not vulnerable because the attacker cannot exploit the
code in default, standard, or recommended configurations.
Security Advisory Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Fixes introduced in column. If the table lists only an older version
than what you are currently running, or does not list a non-vulnerable version,
then no upgrade candidate currently exists.
Mitigation
None
- --------------------------END INCLUDED TEXT--------------------
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