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ciscoCiscoCISCO-SA-ASAFTD-RSA-KEY-LEAK-MS7UEFZZ
HistoryAug 10, 2022 - 4:00 p.m.

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software RSA Private Key Leak Vulnerability

2022-08-1016:00:00
tools.cisco.com
80

0.002 Low

EPSS

Percentile

53.2%

A vulnerability in the handling of RSA keys on devices running Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve an RSA private key.

This vulnerability is due to a logic error when the RSA key is stored in memory on a hardware platform that performs hardware-based cryptography. An attacker could exploit this vulnerability by using a Lenstra side-channel attack against the targeted device. A successful exploit could allow the attacker to retrieve the RSA private key.

The following conditions may be observed on an affected device:

This vulnerability will apply to approximately 5 percent of the RSA keys on a device that is running a vulnerable release of Cisco ASA Software or Cisco FTD Software; not all RSA keys are expected to be affected due to mathematical calculations applied to the RSA key.
The RSA key could be valid but have specific characteristics that make it vulnerable to the potential leak of the RSA private key. If an attacker obtains the RSA private key, they could use the key to impersonate a device that is running Cisco ASA Software or Cisco FTD Software or to decrypt the device traffic. See the Indicators of Compromise [“#ic”] section for more information on the detection of this type of RSA key.
The RSA key could be malformed and invalid. A malformed RSA key is not functional, and a TLS client connection to a device that is running Cisco ASA Software or Cisco FTD Software that uses the malformed RSA key will result in a TLS signature failure, which means a vulnerable software release created an invalid RSA signature that failed verification. If an attacker obtains the RSA private key, they could use the key to impersonate a device that is running Cisco ASA Software or Cisco FTD Software or to decrypt the device 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-rsa-key-leak-Ms7UEfZz [“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-rsa-key-leak-Ms7UEfZz”]

Affected configurations

Vulners
Node
ciscoadaptive_security_virtual_applianceMatch9.16
OR
ciscoadaptive_security_virtual_applianceMatch9.17
OR
ciscoadaptive_security_virtual_applianceMatch9.18
OR
ciscofirepowerMatchany
OR
ciscoasr_1000_series_softwareMatchany
OR
ciscoasa_5500-x_series_ips_ssp_softwareMatchany
OR
cisconx-osMatchanynexus_9000_series
OR
ciscofirepowerMatchany
OR
ciscopix_firewallMatchany
OR
ciscoadaptive_security_virtual_applianceMatchany
OR
ciscofirepower_threat_defense_softwareMatch7.0
OR
ciscofirepower_threat_defense_softwareMatch7.1
OR
ciscofirepower_threat_defense_softwareMatch7.2
OR
ciscofirepowerMatchany
OR
ciscoasr_1000_series_softwareMatchany
OR
ciscoasa_5500-x_series_ips_ssp_softwareMatchany
OR
cisconx-osMatchanynexus_9000_series
OR
ciscofirepowerMatchany
OR
ciscopix_firewallMatchany
OR
ciscofirepower_threat_defense_softwareMatchany
OR
ciscoadaptive_security_virtual_applianceMatch9.16.1
OR
ciscoadaptive_security_virtual_applianceMatch9.16.1.28
OR
ciscoadaptive_security_virtual_applianceMatch9.16.2
OR
ciscoadaptive_security_virtual_applianceMatch9.16.2.3
OR
ciscoadaptive_security_virtual_applianceMatch9.16.2.7
OR
ciscoadaptive_security_virtual_applianceMatch9.16.2.11
OR
ciscoadaptive_security_virtual_applianceMatch9.16.2.13
OR
ciscoadaptive_security_virtual_applianceMatch9.16.2.14
OR
ciscoadaptive_security_virtual_applianceMatch9.16.3
OR
ciscoadaptive_security_virtual_applianceMatch9.16.3.3
OR
ciscoadaptive_security_virtual_applianceMatch9.16.3.14
OR
ciscoadaptive_security_virtual_applianceMatch9.16.3.15
OR
ciscoadaptive_security_virtual_applianceMatch9.17.1
OR
ciscoadaptive_security_virtual_applianceMatch9.17.1.7
OR
ciscoadaptive_security_virtual_applianceMatch9.17.1.9
OR
ciscoadaptive_security_virtual_applianceMatch9.17.1.10
OR
ciscoadaptive_security_virtual_applianceMatch9.17.1.11
OR
ciscoadaptive_security_virtual_applianceMatch9.18.1
OR
ciscoadaptive_security_virtual_applianceMatch9.18.1.3
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscoadaptive_security_virtual_applianceMatchany
OR
ciscofirepower_threat_defense_softwareMatch7.0.0
OR
ciscofirepower_threat_defense_softwareMatch7.0.0.1
OR
ciscofirepower_threat_defense_softwareMatch7.0.1
OR
ciscofirepower_threat_defense_softwareMatch7.0.1.1
OR
ciscofirepower_threat_defense_softwareMatch7.0.2
OR
ciscofirepower_threat_defense_softwareMatch7.0.2.1
OR
ciscofirepower_threat_defense_softwareMatch7.0.3
OR
ciscofirepower_threat_defense_softwareMatch7.1.0
OR
ciscofirepower_threat_defense_softwareMatch7.1.0.1
OR
ciscofirepower_threat_defense_softwareMatch7.1.0.2
OR
ciscofirepower_threat_defense_softwareMatch7.2.0
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch3100_series
OR
ciscofirepower_threat_defense_softwareMatchany
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscoasaMatch5500-x_series_firewalls
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch2100_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch1000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch9000_series
OR
ciscofirepower_services_for_adaptive_security_applianceMatch4100_series
OR
ciscoadaptive_security_virtual_applianceMatch3100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch5500-x_series_firewalls
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch3100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch3100_series
OR
ciscofirepower_threat_defense_softwareMatch2100_series
OR
ciscofirepower_threat_defense_softwareMatch1000_series
OR
ciscofirepower_threat_defense_softwareMatch9000_series
OR
ciscofirepower_threat_defense_softwareMatch4100_series
OR
ciscofirepower_threat_defense_softwareMatch3100_series

0.002 Low

EPSS

Percentile

53.2%

Related for CISCO-SA-ASAFTD-RSA-KEY-LEAK-MS7UEFZZ