Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2019-1715

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
03/05/2019
Last modified:
09/10/2019

Description

A vulnerability in the Deterministic Random Bit Generator (DRBG), also known as Pseudorandom Number Generator (PRNG), used in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a cryptographic collision, enabling the attacker to discover the private key of an affected device. The vulnerability is due to insufficient entropy in the DRBG when generating cryptographic keys. An attacker could exploit this vulnerability by generating a large number of cryptographic keys on an affected device and looking for collisions with target devices. A successful exploit could allow the attacker to impersonate an affected target device or to decrypt traffic secured by an affected key that is sent to or from an affected target device.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:adaptive_security_appliance_device_manager:*:*:*:*:*:*:*:* 9.8 (including) 9.8.4 (excluding)
cpe:2.3:a:cisco:adaptive_security_appliance_device_manager:*:*:*:*:*:*:*:* 9.9 (including) 9.9.2.50 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.2.1 (including) 6.2.3.12 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.3.0 (including) 6.3.0.3 (excluding)
cpe:2.3:h:cisco:asa-5506-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5506h-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5506w-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5508-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5516-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5525-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5545-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa-5555-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5500:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools