CVE-2023-33457 in Workflow
Summary
by MITRE • 06/06/2023
In Sogou Workflow v0.10.6, memcpy a negtive size in URIParser::parse , may cause buffer-overflow and crash.
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Analysis
by VulDB Data Team • 01/04/2026
The vulnerability identified as CVE-2023-33457 affects Sogou Workflow version 0.10.6 and represents a critical buffer overflow condition stemming from improper input validation within the URIParser::parse function. This issue manifests when the memcpy operation receives a negative size parameter, creating a scenario where memory operations extend beyond intended boundaries. The flaw exists within the URI parsing component of the workflow engine, which processes and validates web addresses and resource identifiers. When malformed URI inputs are processed, the parsing logic fails to properly validate the size parameter before invoking memcpy, leading to undefined behavior and potential system instability.
The technical implementation of this vulnerability demonstrates a classic buffer overflow condition that aligns with CWE-121, which describes stack-based buffer overflow issues. The negative size parameter in the memcpy call causes the function to attempt copying memory from invalid addresses or copying an excessive amount of data, resulting in memory corruption. This type of vulnerability falls under the ATT&CK technique T1203, where adversaries may exploit memory corruption vulnerabilities to achieve arbitrary code execution or system compromise. The vulnerability's impact is amplified by the fact that it occurs during URI parsing, a common operation that could be triggered through various attack vectors including web requests, file processing, or network communications.
Operational exploitation of this vulnerability could lead to application crashes, denial of service conditions, and potentially more severe consequences depending on the execution environment. The buffer overflow may result in stack corruption that could be leveraged by attackers to redirect program execution flow or inject malicious code. Systems utilizing Sogou Workflow for processing web content, handling user inputs, or managing network communications would be particularly at risk. The vulnerability's exploitation potential increases when the application processes untrusted URI data from external sources without proper sanitization, creating opportunities for remote code execution or system compromise. Organizations relying on this workflow engine for critical operations may experience service disruptions or security breaches if this vulnerability remains unaddressed.
Mitigation strategies for CVE-2023-33457 should prioritize immediate patching of the Sogou Workflow component to version 0.10.7 or later, which contains the necessary fixes for the URI parsing logic. System administrators should implement input validation controls to sanitize all URI data before processing, particularly when handling external inputs or user-generated content. The implementation of address space layout randomization and stack canaries can provide additional defense-in-depth measures against potential exploitation attempts. Network segmentation and access controls should be enforced to limit exposure of systems running vulnerable versions of the workflow engine. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities within the application's codebase, particularly in memory management functions. Organizations should also consider implementing intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability pattern. The fix should include proper validation of size parameters in memcpy operations and comprehensive error handling for malformed URI inputs to prevent similar issues from occurring in the future.