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ciscoCiscoCISCO-SA-20160921-FMC
HistorySep 21, 2016 - 4:00 p.m.

Cisco Firepower Management Center and FireSIGHT System Software SSLIinspection Bypass Vulnerability

2016-09-2116:00:00
tools.cisco.com
13

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

50.4%

A vulnerability in SSL inspection for Cisco Firepower Management Center and Cisco FireSIGHT System software could allow an unauthenticated, remote attacker to bypass configured do-not-decrypt rules in the SSL policy rule set.

The vulnerability is due to lack of verification of the user input parameters within the HTTP URL against the SSL certificate. An attacker could exploit this vulnerability by sending a crafted HTTP URL to the targeted system. An exploit could allow the attacker to bypass configured SSL inspection rules. The SSL inspection do-not-decrypt rule should force a connection to be permanently encrypted.

Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available.

This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160921-fmc[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160921-fmc”]

Affected configurations

Vulners
Node
ciscofirepower_system_softwareMatchany
OR
ciscofirepower_system_softwareMatchany

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

50.4%

Related for CISCO-SA-20160921-FMC