CVE-2021-22900 in Pulse Secure and Ivanti Products
Published on May 27, 2021
Known Exploited Vulnerability
This Pulse Connect Secure Arbitrary File Upload Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.
The following remediation steps are recommended / required by April 23, 2021: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2021-22900 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2021-22900 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2021-22900
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Exploit 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.