CVE-2020-3545 Cisco FXOS Software Buffer Overflow Vulnerability
An authenticated local attacker with admin credentials can trigger a stack-based buffer overflow to execute arbitrary code with root privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-3545?
CVE-2020-3545 is a medium-severity memory corruption vulnerability in Cisco Firepower Extensible Operating System, published on 4 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in Cisco FXOS Software could allow an authenticated, local attacker with administrative credentials to cause a buffer overflow condition. The vulnerability is due to incorrect bounds checking of values that are parsed from a specific file. An attacker could exploit this vulnerability by supplying a crafted file that, when it is processed, may cause a stack-based buffer overflow. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system with root privileges. An attacker would need to have valid administrative credentials to exploit this vulnerability.
Which versions are affected by CVE-2020-3545?
It affects 1 product.
Products include Cisco Firepower Extensible Operating System.
How do I fix CVE-2020-3545?
No fix has been published for CVE-2020-3545 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-3545 being exploited?
There is no known exploitation of CVE-2020-3545 in the wild and no public exploit code.
Other vulnerabilities in Cisco Firepower Extensible Operating System
- CVE-2018-0310 Information disclosure in Cisco FXOS and NX-OS unknown
- CVE-2015-6435 Command injection in n/a
- CVE-2021-1368 Memory corruption in Cisco NX-OS Software
- CVE-2020-3456 Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability
- CVE-2020-3172 Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability
All Cisco Firepower Extensible Operating System vulnerabilities
Sources
Also known as GHSA-7qq2-vhg3-r8g8.