CVE-2022-26097 in libsimba
Summary
by MITRE • 04/12/2022
Null pointer dereference vulnerability in parser_unknown_property function in libsimba library prior to SMR Apr-2022 Release 1 allows out of bounds write by remote attacker.
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Analysis
by VulDB Data Team • 04/14/2022
The CVE-2022-26097 vulnerability represents a critical null pointer dereference flaw within the libsimba library's parser_unknown_property function, affecting versions prior to the April 2022 SMR Release 1. This vulnerability stems from improper input validation and memory management practices within the library's parsing mechanism, creating a pathway for remote attackers to execute arbitrary code through carefully crafted malicious inputs. The issue manifests as a null pointer dereference that ultimately results in an out-of-bounds write operation, fundamentally compromising the integrity and stability of systems utilizing this vulnerable library.
The technical implementation of this vulnerability involves the parser_unknown_property function failing to properly validate input parameters before attempting to dereference pointers. When the library encounters unexpected or malformed property data during parsing operations, the function does not perform adequate null checks before accessing memory locations, leading to a situation where a null pointer is dereferenced. This misbehavior triggers a cascade of memory corruption that allows attackers to manipulate memory layout and execute arbitrary code. The vulnerability operates at the intersection of multiple security concerns including buffer overflows, memory corruption, and privilege escalation, making it particularly dangerous in environments where the library processes untrusted input from remote sources.
From an operational perspective, this vulnerability poses significant risks to organizations deploying systems that rely on the libsimba library for data processing and parsing tasks. Remote attackers can exploit this weakness by sending maliciously formatted data to applications that utilize the vulnerable library, potentially leading to complete system compromise, data exfiltration, or denial of service conditions. The out-of-bounds write capability provides attackers with substantial control over memory operations, enabling them to overwrite critical program structures or inject malicious code into the executing process. This vulnerability is particularly concerning in networked environments where applications may receive input from untrusted sources without proper sanitization, making it a prime target for exploitation in various attack scenarios.
The impact of CVE-2022-26097 aligns with CWE-476, which specifically addresses null pointer dereference vulnerabilities in software systems, and demonstrates characteristics consistent with ATT&CK technique T1203, which involves exploitation of input validation flaws to achieve remote code execution. Organizations should prioritize immediate patching of affected systems to mitigate this vulnerability, as the April 2022 SMR Release 1 includes necessary fixes that address the null pointer dereference issue. Additionally, implementing network segmentation, input validation controls, and monitoring for unusual parsing behavior can provide additional layers of defense against exploitation attempts. Security teams should also consider conducting comprehensive vulnerability assessments to identify all systems utilizing the affected libsimba library and ensure proper remediation across their entire infrastructure.