CVE-2020-3528 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
Remote attackers can cause Cisco ASA and FTD devices to reload by sending malformed OSPFv2 packets, resulting in a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3528?
CVE-2020-3528 is a high-severity denial of service vulnerability in Cisco Adaptive Security Appliance, published on 21 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the OSPF Version 2 (OSPFv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation when the affected software processes certain OSPFv2 packets with Link-Local Signaling (LLS) data. An attacker could exploit this vulnerability by sending a malformed OSPFv2 packet to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition.
Weakness: CWE-400
Which versions are affected by CVE-2020-3528?
It affects 3 products.
Products include Cisco Adaptive Security Appliance, Cisco Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense.
How do I fix CVE-2020-3528?
No fix has been published for CVE-2020-3528 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-3528 being exploited?
There is no known exploitation of CVE-2020-3528 in the wild and no public exploit code.
Other vulnerabilities in Cisco Adaptive Security Appliance
- CVE-2021-1573 Denial of service in Cisco Adaptive Security Appliance Software
- CVE-2021-34793 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
- CVE-2021-40117 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
- CVE-2021-40118 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
- CVE-2020-3304 Denial of service in Cisco Adaptive Security Appliance (ASA) Software
Sources
Also known as GHSA-7233-cpff-xw5j.