Cisco Security Advisory
Cisco Firepower System Software Detection Engine RTF and RAR Malware and File Policy Bypass Vulnerabilities
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CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X
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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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-firepwr-bypass
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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
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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.
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There are no workarounds that address this vulnerability.
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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
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.Cisco FTD Software Release First Fixed Release for These Vulnerabilities Earlier than 6.1.01 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.
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.
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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.
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Cisco would like to thank Yaser Mansour for reporting this vulnerability.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial public release. - Final 2019-October-02
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