cisco-sa-asaftd-fileup-dos-zvC7wtys: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services File Upload Denial of Service Vulnerability
First published: Wed Oct 21 2020(Updated: )
Update from October 22nd, 2020: Cisco has become aware of a new Cisco Adaptive Security Appliance vulnerability that could affect the fixed releases recommended for code trains 9.13 and 9.14 in the Fixed Software section of this advisory. See the Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability for additional information. A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arbitrary-sized files to specific folders on an affected device, which could lead to an unexpected device reload. The vulnerability exists because the affected software does not efficiently handle the writing of large files to specific folders on the local file system. An attacker could exploit this vulnerability by uploading files to those specific folders. A successful exploit could allow the attacker to write a file that triggers a watchdog timeout, which would cause the device to unexpectedly reload, causing a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication, which includes 17 Cisco Security Advisories that describe 17 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: October 2020 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.
Credit: This vulnerability was found by Ilkin Gasimov Cisco during internal security testing
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco ASA Software | =9.14<9.14.1.15=9.13<9.13.1.12=9.12<9.12.4.2=9.10<9.10.1.44=9.9<9.9.2.80>=9.7<=9.8<9.8.4.25>=Earlier than 9.6<=9.6<9.6.4.45 | 9.14.1.15 9.13.1.12 9.12.4.2 9.10.1.44 9.9.2.80 9.8.4.25 9.6.4.45 |
| Cisco FTD Software | >=Earlier than 6.2.2=6.2.2=6.2.3=6.3.0<=6.4.0<6.4.0.10 | 6.4.0.10 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco security advisory?
The vulnerability ID for this Cisco security advisory is cisco-sa-asaftd-fileup-dos-zvC7wtys.
What is the severity rating of vulnerability cisco-sa-asaftd-fileup-dos-zvC7wtys?
The severity rating of vulnerability cisco-sa-asaftd-fileup-dos-zvC7wtys is high (8.6).
Which Cisco products are affected by vulnerability cisco-sa-asaftd-fileup-dos-zvC7wtys?
Cisco ASA Software versions 9.14 up to but excluding 9.14.1.15, 9.13 up to but excluding 9.13.1.12, 9.12 up to but excluding 9.12.4.2, 9.10 up to but excluding 9.10.1.44, 9.9 up to but excluding 9.9.2.80, 9.8 up to but excluding 9.8.4.25, and versions earlier than 9.6 are affected. Cisco FTD Software versions earlier than 6.2.2 and up to but excluding 6.4.0.10 are also affected.
What is the recommended remediation for vulnerability cisco-sa-asaftd-fileup-dos-zvC7wtys?
Upgrade to Cisco ASA Software version 9.14.1.15, 9.13.1.12, 9.12.4.2, 9.10.1.44, 9.9.2.80, 9.8.4.25, or a later fixed release. For Cisco FTD Software, upgrade to version 6.4.0.10 or a later fixed release.
Where can I find more information about vulnerability cisco-sa-asaftd-fileup-dos-zvC7wtys?
For more information about vulnerability cisco-sa-asaftd-fileup-dos-zvC7wtys and its impact, you can refer to the Cisco Security Advisory at the following link: [Cisco Security Advisory cisco-sa-asaftd-fileup-dos-zvC7wtys](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys)
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