cisco-sa-memc-dos-fncTyYKG: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability
First published: Wed Apr 28 2021(Updated: )
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to insufficient boundary checks for specific data that is provided to the web services interface of an affected system. An attacker could exploit this vulnerability by sending a malicious HTTP request. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system, which could disclose data fragments or cause the device to reload, resulting in 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-memc-dos-fncTyYKG This advisory is part of the April 2021 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: April 2021 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.
Credit: Joshua Perez Phil Purviance.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco ASA Software | =9.15<9.15.1.7=9.14<9.14.2.8=9.13<9.13.1.21>=9.10<=9.12<9.12.4.13=9.9<9.9.2.85=9.8<9.8.4.34 | 9.15.1.7 9.14.2.8 9.13.1.21 9.12.4.13 9.9.2.85 9.8.4.34 |
| Cisco FTD Software | >=6.5.0<=6.6.0<6.6.32>=Earlier than 6.2.2=6.2.2=6.2.3=6.3.0<=6.4.0<6.4.0.12 (May 2021) | 6.6.32 6.4.0.12 (May 2021) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco ASA and FTD vulnerability?
The vulnerability ID for this Cisco ASA and FTD vulnerability is cisco-sa-memc-dos-fncTyYKG.
What is the severity of cisco-sa-memc-dos-fncTyYKG?
The severity of cisco-sa-memc-dos-fncTyYKG is high, with a severity value of 8.5.
How does cisco-sa-memc-dos-fncTyYKG affect Cisco ASA Software?
cisco-sa-memc-dos-fncTyYKG affects Cisco ASA Software versions 9.15 up to 9.15.1.7, 9.14 up to 9.14.2.8, 9.13 up to 9.13.1.21, 9.10 up to 9.12.4.13, 9.9 up to 9.9.2.85, and 9.8 up to 9.8.4.34.
How does cisco-sa-memc-dos-fncTyYKG affect Cisco FTD Software?
cisco-sa-memc-dos-fncTyYKG affects Cisco FTD Software versions 6.5.0 up to 6.6.0, 6.2.2, 6.2.3, 6.3.0, 6.4.0 up to 6.4.0.12 (May 2021), and earlier than 6.2.2.
How can I fix cisco-sa-memc-dos-fncTyYKG?
To fix cisco-sa-memc-dos-fncTyYKG, upgrade Cisco ASA Software to versions 9.15.1.7, 9.14.2.8, 9.13.1.21, 9.12.4.13, 9.9.2.85, or 9.8.4.34, and upgrade Cisco FTD Software to versions 6.6.32 or 6.4.0.12 (May 2021).
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