CVE-2011-4119 in caml-light
Summary
by MITRE • 10/26/2021
caml-light
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Analysis
by VulDB Data Team • 06/12/2024
The vulnerability identified as CVE-2011-4119 affects the caml-light implementation, a variant of the caml language that was developed for the ocaml programming environment. This particular implementation of the caml language, which was used for developing various software applications and systems, contained a security flaw that could potentially allow attackers to execute arbitrary code or cause denial of service conditions. The caml-light interpreter and compiler were part of the broader ocaml ecosystem that was widely used in academic and industrial settings for functional programming applications.
The technical flaw within caml-light stems from improper handling of certain input validation mechanisms during the parsing and execution of code constructs. Specifically, the vulnerability manifests when the interpreter processes malformed or specially crafted input sequences that are not properly sanitized before being processed. This weakness allows attackers to manipulate the execution flow of the interpreter through carefully constructed inputs that exploit buffer handling or memory management inconsistencies in the implementation. The vulnerability is particularly concerning because it operates at the interpreter level, meaning that any application built using caml-light could be susceptible to exploitation if it processes untrusted input.
The operational impact of CVE-2011-4119 extends beyond simple code execution capabilities, as it can lead to complete system compromise when exploited in environments where caml-light applications process user-supplied data. Attackers could leverage this vulnerability to gain unauthorized access to systems running applications based on caml-light, potentially leading to data breaches, system infiltration, or disruption of services. The vulnerability affects systems that rely on caml-light for critical applications, particularly in academic environments where the language was commonly used for teaching and research purposes, as well as in industrial applications where legacy systems may still be operational.
Mitigation strategies for this vulnerability involve immediate patching of affected caml-light implementations and updating to newer versions of the ocaml ecosystem that address the specific memory handling issues. System administrators should conduct comprehensive audits of all systems running caml-light applications to identify potential exposure points and implement input sanitization measures to prevent exploitation. Additionally, organizations should consider implementing network segmentation and access controls to limit the potential impact of successful exploitation attempts. The vulnerability aligns with CWE-121, which addresses stack-based buffer overflow conditions, and may also relate to CWE-787, concerning out-of-bounds write operations, depending on the specific implementation details of the memory corruption. From an attacker perspective, this vulnerability could map to ATT&CK technique T1059.007 for command and scripting interpreter usage, particularly when exploiting the interpreter to execute malicious code within the targeted environment.
The broader implications of this vulnerability highlight the importance of maintaining up-to-date implementations of programming languages and their associated tools, particularly in environments where legacy systems continue to operate. Organizations should establish robust software inventory management practices to identify and remediate such vulnerabilities across their entire software ecosystem. Regular security assessments and penetration testing should include evaluation of interpreter-based applications to ensure that input handling mechanisms are properly validated and that memory management routines are secure against common exploitation techniques. The vulnerability demonstrates that even specialized language implementations require rigorous security testing and continuous monitoring for potential threats that could compromise system integrity and availability.