CVE-2021-1593 Cisco Packet Tracer for Windows DLL Injection Vulnerability
Local attackers can inject malicious DLLs via path handling flaws to execute arbitrary code with elevated privileges in Cisco Packet Tracer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-1593?
CVE-2021-1593 is a high-severity code injection vulnerability in Cisco Packet Tracer, published on 4 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A vulnerability in Cisco Packet Tracer for Windows could allow an authenticated, local attacker to perform a DLL injection attack on an affected device. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. This vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path on the system, which can cause a malicious DLL file to be loaded when the application starts. A successful exploit could allow an attacker with normal user privileges to execute arbitrary code on the affected system with the privileges of another user’s account.
Weakness: CWE-427
Which versions are affected by CVE-2021-1593?
It affects 1 product.
Products include Cisco Packet Tracer.
How do I fix CVE-2021-1593?
No fix has been published for CVE-2021-1593 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-1593 being exploited?
There is no known exploitation of CVE-2021-1593 in the wild and no public exploit code.
Other vulnerabilities in Cisco Packet Tracer
Sources
Also known as GHSA-hrcm-7659-jp84.