Adobe ColdFusion UDF CVE-2021-40698 in 2021.1 & 2018.10
CVE-2021-40698 Published on September 7, 2023
ColdFusion Use of Inherently Dangerous Function Leads To Security feature bypass
ColdFusion version 2021 update 1 (and earlier) and versions 2018.10 (and earlier) are impacted by an Use of Inherently Dangerous Function vulnerability that can lead to a security feature bypass??. An authenticated attacker could leverage this vulnerability to access and manipulate arbitrary data on the environment.
Vulnerability Analysis
CVE-2021-40698 is exploitable with network 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 be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
Use of Inherently Dangerous Function
The program calls a function that can never be guaranteed to work safely. Certain functions behave in dangerous ways regardless of how they are used. Functions in this category were often implemented without taking security concerns into account. The gets() function is unsafe because it does not perform bounds checking on the size of its input. An attacker can easily send arbitrarily-sized input to gets() and overflow the destination buffer. Similarly, the >> operator is unsafe to use when reading into a statically-allocated character array because it does not perform bounds checking on the size of its input. An attacker can easily send arbitrarily-sized input to the >> operator and overflow the destination buffer.
Products Associated with CVE-2021-40698
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Affected Versions
Adobe ColdFusion:- Before and including 2018.11 is affected.
- Before and including 2018.11 is affected.
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.