Vulnerabilities > CVE-2020-3350 - Race Condition vulnerability in multiple products

A vulnerability in the endpoint software of Cisco AMP for Endpoints and Clam AntiVirus could allow an authenticated, local attacker to cause the running software to delete arbitrary files on the system. The vulnerability is due to a race condition that could occur when scanning malicious files. An attacker with local shell access could exploit this vulnerability by executing a script that could trigger the race condition. A successful exploit could allow the attacker to delete arbitrary files on the system that the attacker would not normally have privileges to delete, producing system instability or causing the endpoint software to stop working.

Vulnerable Configurations

Part	Description	Count
Application	Cisco Cisco Advanced Malware Protection FOR Endpoints 1.6.0 Cisco Advanced Malware Protection FOR Endpoints 1.7.0 Cisco Advanced Malware Protection FOR Endpoints 1.8.0 Cisco Advanced Malware Protection FOR Endpoints 1.8.1 Cisco Advanced Malware Protection FOR Endpoints 1.9.0 Cisco Advanced Malware Protection FOR Endpoints 1.10.0 Cisco Advanced Malware Protection FOR Endpoints 1.10.1 Cisco Advanced Malware Protection FOR Endpoints 1.10.2 Cisco Advanced Malware Protection FOR Endpoints 1.11.0 Cisco Advanced Malware Protection FOR Endpoints 1.11.1 Cisco Advanced Malware Protection FOR Endpoints 1.12.0 Cisco Advanced Malware Protection FOR Endpoints 1.12.2 Cisco Advanced Malware Protection FOR Endpoints 1.12.3 Cisco Advanced Malware Protection FOR Endpoints 1.12.3.738 Cisco Advanced Malware Protection FOR Endpoints 1.8.4 Cisco Advanced Malware Protection FOR Endpoints 1.9.1 Cisco Advanced Malware Protection FOR Endpoints 1.12.1 Cisco Advanced Malware Protection FOR Endpoints 1.12.3.698 Cisco Clam Antivirus 0.101 Cisco Clam Antivirus 0.102.2	33
OS	Fedoraproject Fedoraproject Fedora 31 Fedoraproject Fedora 32	2
OS	Debian Debian Debian Linux 9.0	1
OS	Canonical Canonical Ubuntu Linux 18.04 Canonical Ubuntu Linux 14.04 Canonical Ubuntu Linux 20.04 Canonical Ubuntu Linux 16.04 Canonical Ubuntu Linux 12.04	5

Common Weakness Enumeration (CWE)

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Common Attack Pattern Enumeration and Classification (CAPEC)

Leveraging Race Conditions
This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References