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AUSCERT External Security Bulletin Redistribution
ESB-2020.0294.2
Apache Tomcat vulnerability CVE-2019-17563
6 January 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Existing Account
Resolution: None
CVE Names: CVE-2019-17563
Reference: ESB-2020.0288
ESB-2020.0284
ESB-2020.0063
ESB-2020.0014
ESB-2019.4714
Original Bulletin:
https://support.f5.com/csp/article/K24551552
Revision History: January 6 2021: Additional vulnerable versions added by vendor
January 29 2020: Initial Release
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K24551552: Apache Tomcat vulnerability CVE-2019-17563
Original Publication Date: 24 Jan, 2020
Latest Publication Date: 06 Jan, 2021
Security Advisory Description
When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to
8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could
perform a session fixation attack. The window was considered too narrow for an
exploit to be practical but, erring on the side of caution, this issue has been
treated as a security vulnerability. (CVE-2019-17563)
Impact
Under certain circumstances, a race condition in Tomcat allows session
fixation, potentially allowing a local attack to access another administrative
user's session.
Security Advisory Status
F5 Product Development has assigned ID 872109 (BIG-IP) to this vulnerability.
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, point 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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |16.x |16.0.0 - |None | | | |
| | |16.0.1 | | | | |
| +------+----------+----------+ | | |
| |15.x |15.0.0 - |None | | | |
| | |15.1.2 | | | | |
| +------+----------+----------+ | | |
|BIG-IP (LTM, AAM, |14.x |14.1.0 - |None | | | |
|AFM, Analytics, | |14.1.3 | | | |Apache |
|APM, ASM, DNS, FPS,+------+----------+----------+Medium |5.9 |Tomcat |
|GTM, Link |13.x |13.1.0 - |None | | | |
|Controller, PEM) | |13.1.3 | | | | |
| +------+----------+----------+ | | |
| |12.x |12.1.0 - |None | | | |
| | |12.1.5 | | | | |
| +------+----------+----------+ | | |
| |11.x |11.5.2 - |None | | | |
| | |11.6.5 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |5.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
^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.
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
Supplemental Information
o K51812227: Understanding Security Advisory versioning
o K41942608: Overview of Security Advisory articles
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
o K9502: BIG-IP hotfix and point release matrix
o K13123: Managing BIG-IP product hotfixes (11.x - 15.x)
o K167: Downloading software and firmware from F5
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
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