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AUSCERT External Security Bulletin Redistribution
ESB-2019.3729
Cisco Firepower System Software Detection Engine RTF and RAR
Malware and File Policy Bypass Vulnerabilities
4 October 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Firepower System Software Detection Engine
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12697 CVE-2019-12696
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-firepwr-bypass
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Cisco Firepower System Software Detection Engine RTF and RAR Malware and File
Policy Bypass Vulnerabilities
Priority: Medium
Advisory ID: cisco-sa-20191002-firepwr-bypass
First Published: 2019 October 2 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvo70545CSCvp66222
CVE-2019-12696
CVE-2019-12697
CWE-693
CVSS Score:
5.8 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X
Summary
o Multiple vulnerabilities in the Cisco Firepower System Software Detection
Engine could allow an unauthenticated, remote attacker to bypass configured
Malware and File Policies for RTF and RAR file types.
For more information about these vulnerabilities, see the Details section
of this advisory.
Cisco has released software updates that address these vulnerabilities.
There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20191002-firepwr-bypass
Affected Products
o Vulnerable Products
These vulnerabilities affect the following Cisco products if running a
vulnerable release of Cisco Firepower Software:
3000 Series Industrial Security Appliances (ISAs)
Adaptive Security Appliance (ASA) 5500-X Series Firewalls
ASA 5500-X Series with FirePOWER Services
Advanced Malware Protection (AMP) for Networks for FirePOWER 7000
Series Appliances
AMP for Networks for FirePOWER 8000 Series Appliances
Firepower 2100 Series
Firepower 4100 Series
Firepower 1000 Series Appliances
FirePOWER 7000 Series Appliances
FirePOWER 8000 Series Appliances
Firepower 9300 Security Appliances
Firepower Threat Defense for Integrated Services Routers (ISRs)
FTD Virtual (FTDv)
Next-Generation Intrusion Prevention System (NGIPS)
For information about which Cisco FTD Software releases are vulnerable, see
the Fixed Software section of this advisory.
These vulnerabilities may also affect the open source Snort project. For
more information, see the Snort website .
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 1000 Series
Adaptive Security Appliance (ASA) Software
Firepower Management Center (FMC)
Firepower Management Center 1000
Meraki MX Security Appliances
Details
o Two vulnerabilities in the Cisco Firepower System Software Detection Engine
could allow an unauthenticated, remote attacker to bypass configured
Malware and File Policies for RTF and RAR file types.
The vulnerabilities are not dependent on one another; exploitation of one
of the vulnerabilities is not required to exploit the other. In addition, a
software release that is affected by one of the vulnerabilities may not be
affected by the other.
Details about the vulnerabilities are as follows.
Cisco Firepower System Software Detection Engine RTF File Policy Bypass
Vulnerability
A vulnerability in the detection engine of Cisco Firepower System Software
could allow an unauthenticated, remote attacker to bypass a configured
Malware and File Policy for an RTF file type.
The vulnerability is due to incorrect detection of the RTF file syntax. An
attacker could exploit this vulnerability by sending a malicious RTF file
through the targeted device. A successful exploit could allow the attacker
to bypass a configured Malware and File Policy for an RTF file type.
The CVE ID for this vulnerability is CVE-2019-12697.
The SIR for this vulnerability is Medium.
Cisco Firepower System Software Detection Engine RAR File Policy Bypass
Vulnerability
A vulnerability in the detection engine of Cisco Firepower System Software
could allow an unauthenticated, remote attacker to bypass a configured
Malware and File Policy for a RAR file type.
The vulnerability is due to incorrect detection of the RAR file syntax. An
attacker could exploit this vulnerability by sending a malicious RAR file
through the targeted device. A successful exploit could allow the attacker
to bypass a configured Malware and File Policy for a RAR file type.
The CVE ID for this vulnerability is CVE-2019-12696.
The SIR for this vulnerability is Medium.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
In the following table, the left column lists releases of Cisco FTD
Software. The right column indicates whether a release is affected by the
vulnerability described in this advisory and the first release that
includes the fix for this vulnerability.
Cisco FTD Software
Cisco FTD Software Release First Fixed Release for These Vulnerabilities
Earlier than 6.1.0 ^1 Migrate to a fixed release.
6.1.0 Migrate to a fixed release.
6.2.0 Migrate to a fixed release.
6.2.1 Migrate to a fixed release.
6.2.2 Migrate to a fixed release.
6.2.3 6.2.3.15
6.3.0 6.3.0.5
6.4.0 6.4.0.6
6.5.0 Not vulnerable.
1. Cisco FMC and FTD Software releases 6.0.1 and earlier have reached end
of software maintenance. Customers are advised to migrate to a supported
release that includes the fix for this vulnerability.
To upgrade to a fixed release of Cisco FTD Software, customers can do one
of the following:
For devices that are managed by using Cisco Firepower Management Center
(FMC), use the FMC interface to install the upgrade. After installation
is complete, reapply the access control policy.
For devices that are managed by using Cisco Firepower Device Manager
(FDM), use the FDM interface to install the upgrade. After installation
is complete, reapply the access control policy.
The Snort version that is installed depends on the FMC release.
This vulnerability also applies to the open source Snort project. Please
check the Snort website for additional information.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o Cisco would like to thank Yaser Mansour for reporting this vulnerability.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20191002-firepwr-bypass
Revision History
o +---------+--------------------------+---------+--------+-----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+-----------------+
| 1.0 | Initial public release. | - | Final | 2019-October-02 |
+---------+--------------------------+---------+--------+-----------------+
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