CVE-2021-4277 in utils
Summary
by MITRE • 12/25/2022
A vulnerability, which was classified as problematic, has been found in fredsmith utils. This issue affects some unknown processing of the file screenshot_sync of the component Filename Handler. The manipulation leads to predictable from observable state. The name of the patch is dbab1b66955eeb3d76b34612b358307f5c4e3944. It is recommended to apply a patch to fix this issue. The identifier VDB-216749 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 01/24/2023
The vulnerability identified as CVE-2021-4277 represents a significant security weakness within the fredsmith utils library, specifically impacting the screenshot_sync file processing functionality. This issue manifests in the filename handler component where predictable state conditions can be observed through manipulation of the processing flow. The vulnerability's classification as problematic indicates that it presents a substantial risk to system integrity and potentially exposes underlying processes to unauthorized access or manipulation. The affected system behavior demonstrates observable patterns that could be exploited by malicious actors to predict and potentially manipulate system states, creating a foundation for more sophisticated attacks.
The technical flaw resides in the filename handler's processing of screenshot_sync files, where the system fails to properly randomize or obscure state information during file handling operations. This predictable state behavior creates opportunities for attackers to observe and potentially reproduce system conditions, leading to potential information disclosure or state manipulation. The vulnerability's nature suggests a weakness in entropy generation or state management within the file processing pipeline, where expected randomization mechanisms are either absent or insufficiently implemented. According to CWE classification standards, this vulnerability aligns with CWE-330, which addresses insufficient entropy in random number generators, and potentially CWE-20, which covers improper input validation. The specific manifestation in the filename handler component indicates a failure in proper state isolation and randomization during file processing operations.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable more severe attacks through state prediction and manipulation. An attacker who can observe the predictable state conditions may be able to exploit this weakness to bypass security controls, manipulate file processing workflows, or gain unauthorized access to system resources. The vulnerability affects the core file handling functionality, which could compromise the integrity of screenshot processing operations and potentially lead to broader system compromise. Organizations relying on fredsmith utils for screenshot synchronization may experience unauthorized access to sensitive data or disruption of normal processing operations. The vulnerability's impact is particularly concerning given that it affects fundamental file handling mechanisms that are likely used in security-critical applications. According to ATT&CK framework references, this vulnerability could map to techniques involving credential access through predictable state manipulation and privilege escalation via file processing manipulation.
The recommended mitigation strategy involves applying the specific patch identified by the patch identifier dbab1b66955eeb3d76b34612b358307f5c4e3944, which addresses the predictable state condition in the filename handler component. This patch should be implemented immediately across all affected systems to eliminate the vulnerability. System administrators should also conduct thorough vulnerability assessments to identify any potential exploitation attempts or unauthorized access that may have occurred prior to patch application. Additional security measures include implementing proper entropy generation for state management, conducting regular security audits of file processing components, and monitoring for unusual patterns in file handling operations. Organizations should also consider implementing network segmentation to limit access to systems containing vulnerable components and establish robust monitoring procedures to detect potential exploitation attempts. The vulnerability's resolution through patching aligns with standard security practices for addressing predictable state issues in file processing systems, ensuring that future operations maintain proper entropy and state isolation during file handling processes.