CVE-2020-3529
CVSS v3
7.5
HIGH
EPSS Score
1.3 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A vulnerability in the SSL VPN negotiation process for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to inefficient direct memory access (DMA) memory management during the negotiation phase of an SSL VPN connection. An attacker could exploit this vulnerability by sending a steady stream of crafted Datagram TLS (DTLS) traffic to an affected device. A successful exploit could allow the attacker to exhaust DMA memory on the device and cause a DoS condition.
Technical details
- Published
- 2020-10-21
Frequently asked questions
What is CVE-2020-3529?
A vulnerability in the SSL VPN negotiation process for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to inefficient direct memory access (DMA) memory management during the negotiation phase of an SSL VPN connection. An attacker could exploit this vulnerability by sending a steady stream of crafted Datagram TLS (DTLS) traffic to an affected device. A successful exploit could allow the attacker to exhaust DMA memory on the device and cause a DoS condition.
Is CVE-2020-3529 actively exploited?
Active exploitation of CVE-2020-3529 has not been confirmed. The EPSS score is 1.3%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-3529?
CVE-2020-3529 has a CVSS v3 base score of 7.5 (HIGH severity).
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