CVE-2021-1568 is a vulnerability in Cisco Anyconnect Secure Mobility Client
Published on June 16, 2021
Cisco AnyConnect Secure Mobility Client for Windows Denial of Service Vulnerability
A vulnerability in Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected system. This vulnerability is due to uncontrolled memory allocation. An attacker could exploit this vulnerability by copying a crafted file to a specific folder on the system. A successful exploit could allow the attacker to crash the VPN Agent service when the affected application is launched, causing it to be unavailable to all users of the system. To exploit this vulnerability, the attacker must have valid credentials on a multiuser Windows system.
Vulnerability Analysis
CVE-2021-1568 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Stack Exhaustion Vulnerability?
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
CVE-2021-1568 has been classified to as a Stack Exhaustion vulnerability or weakness.
Products Associated with CVE-2021-1568
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Affected Versions
Cisco AnyConnect Secure Mobility Client Version n/a is affected by CVE-2021-1568Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.