CiscoCVE-2017-6766CVE-2017-6766
CVSS2
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
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
AI Score
Confidence
High
EPSS
Percentile
49.3%
A vulnerability in the Secure Sockets Layer (SSL) Decryption and Inspection feature of Cisco Firepower System Software 5.4.0, 5.4.1, 6.0.0, 6.1.0, 6.2.0, 6.2.1, and 6.2.2 could allow an unauthenticated, remote attacker to bypass the SSL policy for decrypting and inspecting traffic on an affected system. The vulnerability is due to unexpected interaction with Known Key and Decrypt and Resign configuration settings of SSL policies when the affected software receives unexpected SSL packet headers. An attacker could exploit this vulnerability by sending a crafted SSL packet through an affected device in a valid SSL session. A successful exploit could allow the attacker to bypass the SSL decryption and inspection policy for the affected system, which could allow traffic to flow through the system without being inspected. Cisco Bug IDs: CSCve12652.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| cisco | firesight_system_software | 5.4.0 | cpe:2.3:a:cisco:firesight_system_software:5.4.0:*:*:*:*:*:*:* |
| cisco | firesight_system_software | 5.4.1 | cpe:2.3:a:cisco:firesight_system_software:5.4.1:*:*:*:*:*:*:* |
| cisco | firesight_system_software | 6.0.0 | cpe:2.3:a:cisco:firesight_system_software:6.0.0:*:*:*:*:*:*:* |
| cisco | firesight_system_software | 6.1.0 | cpe:2.3:a:cisco:firesight_system_software:6.1.0:*:*:*:*:*:*:* |
| cisco | firesight_system_software | 6.2.0 | cpe:2.3:a:cisco:firesight_system_software:6.2.0:*:*:*:*:*:*:* |
| cisco | firesight_system_software | 6.2.1 | cpe:2.3:a:cisco:firesight_system_software:6.2.1:*:*:*:*:*:*:* |
| cisco | firesight_system_software | 6.2.2 | cpe:2.3:a:cisco:firesight_system_software:6.2.2:*:*:*:*:*:*:* |
CNA Affected
[
{
"product": "Cisco Firepower System Software",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Cisco Firepower System Software"
}
]
}
]Related
CVSS2
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
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
AI Score
Confidence
High
EPSS
Percentile
49.3%