CVE-2019-1715: cisco adaptive_security_appliance_device_manager Insufficient Entropy in PRNG

Vulnerability summary

CVE-2019-1715 is a high (CVSS 7.5) Insufficient Entropy in PRNG vulnerability in cisco adaptive_security_appliance_device_manager. EPSS estimates a 1.73% chance of exploitation in the next 30 days, higher than 77.2% of scored vulnerabilities.

Timeline

1. 03-05-2019
   PublishedVulnerability first disclosed.
2. 19-11-2024
   Last modifiedVulnerability information updated.

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.

• CWE-332Insufficient Entropy in PRNGThe lack of entropy available for, or used by, a Pseudo-Random Number Generator (PRNG) can be a stability and security threat.