8.6
CWE
400
Advisory Published

cisco-sa-asaftd-frag-memleak-mCtqdP9n: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IP Fragment Memory Leak 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 IP fragment-handling implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. This memory leak could prevent traffic from being processed through the device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper error handling when specific failures occur during IP fragment reassembly. An attacker could exploit this vulnerability by sending crafted, fragmented IP traffic to a targeted device. A successful exploit could allow the attacker to continuously consume memory on the affected device and eventually impact traffic, resulting in a DoS condition. The device could require a manual reboot to recover from the DoS condition. Note: This vulnerability applies to both IP Version 4 (IPv4) and IP Version 6 (IPv6) traffic. 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-frag-memleak-mCtqdP9n 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 Santosh Krishnamurthy Cisco during internal security testing

Affected SoftwareAffected VersionHow to fix
Cisco ASA Software=9.14<9.14.1.19 (only 9.14.1.15 is vulnerable)=9.13<9.13.1.13 (only 9.13.1.12 is vulnerable)=9.12<9.12.4.4 (only 9.12.4.2 and 9.12.4.3 are vulnerable)=9.8<9.8.4.26 (only 9.8.4.22 and 9.8.4.25 are vulnerable)
9.14.1.19 (only 9.14.1.15 is vulnerable)
9.13.1.13 (only 9.13.1.12 is vulnerable)
9.12.4.4 (only 9.12.4.2 and 9.12.4.3 are vulnerable)
9.8.4.26 (only 9.8.4.22 and 9.8.4.25 are vulnerable)
Cisco FTD Software

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of cisco-sa-asaftd-frag-memleak-mCtqdP9n?

    The severity of cisco-sa-asaftd-frag-memleak-mCtqdP9n is high with a severity value of 8.6.

  • Which software versions are affected by cisco-sa-asaftd-frag-memleak-mCtqdP9n?

    The affected software versions for cisco-sa-asaftd-frag-memleak-mCtqdP9n are 9.14.1.19 (only 9.14.1.15 is vulnerable), 9.13.1.13 (only 9.13.1.12 is vulnerable), 9.12.4.4 (only 9.12.4.2 and 9.12.4.3 are vulnerable), and 9.8.4.26 (only 9.8.4.22 and 9.8.4.25 are vulnerable).

  • What is the recommended fixed software for cisco-sa-asaftd-frag-memleak-mCtqdP9n?

    The recommended fixed software for cisco-sa-asaftd-frag-memleak-mCtqdP9n is listed in the Fixed Software section on the Cisco Security Advisory page.

  • Is Cisco ASA Software affected by cisco-sa-asaftd-frag-memleak-mCtqdP9n?

    Yes, Cisco ASA Software is affected by cisco-sa-asaftd-frag-memleak-mCtqdP9n.

  • Is Cisco FTD Software affected by cisco-sa-asaftd-frag-memleak-mCtqdP9n?

    No, Cisco FTD Software is not affected by cisco-sa-asaftd-frag-memleak-mCtqdP9n.

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