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AUSCERT External Security Bulletin Redistribution
ESB-2019.3894
InfoZIP vulnerability CVE-2019-13232
18 October 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP products
F5 BIG-IQ products
F5 iWorkflow
F5 Traffix SDC
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Mitigation
CVE Names: CVE-2019-13232
Reference: ESB-2019.2478.2
Original Bulletin:
https://support.f5.com/csp/article/K80311892
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K80311892: InfoZIP vulnerability CVE-2019-13232
Security Advisory
Original Publication Date: 18 Oct, 2019
Security Advisory Description
Info-ZIP UnZip 6.0 mishandles the overlapping of files inside a ZIP container,
leading to denial of service (resource consumption), aka a "better zip bomb"
issue. (CVE-2019-13232)
Impact
Local users with administrative access to the BIG-IP Advanced Shell (bash) may
be able to perform a resource-consumption denial-of-service (DoS) attack. This
attack can only be exploited by uncompressing a ZIP file using the zip or unzip
utility from the command line or by a user-generated script. No F5 scripts or
utilities call these programs to unpack a ZIP archive.
Security Advisory Status
F5 Product Development has assigned ID 819053 (BIG-IP), ID 834185 (BIG-IQ),
and CPF-25130 and CPF-25130 (Traffix) 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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |15.x |15.0.0 - |None | | | |
| | |15.0.1 | | | | |
| +------+----------+----------+ | | |
|BIG-IP (LTM, AAM, |14.x |14.0.0 - |None | | | |
|AFM, Analytics, | |14.1.2 | | | | |
|APM, ASM, DNS, Edge+------+----------+----------+ | | |
|Gateway, FPS, GTM, |13.x |13.1.0 - |None |Medium |4.2 |zip/unzip |
|Link Controller, | |13.1.3 | | | |utility |
|PEM, +------+----------+----------+ | | |
|WebAccelerator) |12.x |12.1.0 - |None | | | |
| | |12.1.5 | | | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|Enterprise Manager |3.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
| |7.x |7.0.0 |None | | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |6.x |6.0.0 - |None | | |zip/unzip |
|Management | |6.1.0 | |Medium |4.0 |utility |
| +------+----------+----------+ | | |
| |5.x |5.2.0 - |None | | | |
| | |5.4.0 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
|F5 iWorkflow |2.x |2.3.0 |None |Medium |4.0 |zip/unzip |
| | | | | | |utility |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC |5.x |5.0.0 - |None |Medium |4.0 |zip/unzip |
| | |5.1.0 | | | |utility |
+-------------------+------+----------+----------+----------+------+----------+
^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
Avoid processing ZIP files from unknown or untrusted sources.
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