cisco-sa-snort-dos-s2R7W9UU: Multiple Cisco Products Snort Memory Leak Denial of Service Vulnerability
First published: Wed Oct 27 2021(Updated: )
Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload. 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-snort-dos-s2R7W9UU This advisory is part of the October 2021 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: October 2021 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.
Credit: This vulnerability was found by Santosh Krishnamurthy Cisco during internal security testing
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco FTD Software | >=6.2.2 and earlier=6.2.3=6.3.0<=6.4.0<6.4.0.12 | 6.4.0.12 |
| Cisco UTD Software | =17.4<17.4.2=17.3<17.3.4a=16.12<16.12.6 | 17.4.2 17.3.4a 16.12.6 |
| Cisco Snort Major | =2.x<2.9.18 | 2.9.18 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco vulnerability?
The vulnerability ID for this Cisco vulnerability is cisco-sa-snort-dos-s2R7W9UU.
What is the severity rating of the Cisco vulnerability cisco-sa-snort-dos-s2R7W9UU?
The severity rating of the Cisco vulnerability cisco-sa-snort-dos-s2R7W9UU is medium with a severity value of 6.8.
Which Cisco products are affected by the vulnerability cisco-sa-snort-dos-s2R7W9UU?
Multiple Cisco products are affected by the vulnerability cisco-sa-snort-dos-s2R7W9UU, including FTD Software, UTD Software, and Snort Major.
How does the vulnerability cisco-sa-snort-dos-s2R7W9UU impact the affected devices?
The vulnerability cisco-sa-snort-dos-s2R7W9UU can allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device.
Where can I find more information about the Cisco vulnerability cisco-sa-snort-dos-s2R7W9UU?
You can find more information about the Cisco vulnerability cisco-sa-snort-dos-s2R7W9UU on the Cisco Security Advisory page: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-s2R7W9UU.
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- collector/cisco-advisory
- source/Cisco
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- agent/references
- agent/last-modified-date
- agent/tags
- agent/author
- agent/first-publish-date
- agent/title
- agent/description
- agent/softwarecombine
- agent/event
- vendor/cisco
- canonical/cisco ftd software
- version/cisco ftd software/6.2.2 and earlier
- version/cisco ftd software/6.2.3
- version/cisco ftd software/6.3.0
- version/cisco ftd software/6.4.0
- canonical/cisco utd software
- version/cisco utd software/17.4
- version/cisco utd software/17.3
- version/cisco utd software/16.12
- canonical/cisco snort major
- version/cisco snort major/2.x