cURL <8.0 Input Validation Bypass in TELNET Option Negotiation
CVE-2023-27533 Published on March 30, 2023
A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.
Vulnerability Analysis
CVE-2023-27533 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Special Element Injection Vulnerability?
The software does not adequately filter user-controlled input for special elements with control implications.
CVE-2023-27533 has been classified to as a Special Element Injection vulnerability or weakness.
Products Associated with CVE-2023-27533
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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.