CVE-2025-0633 Overview
CVE-2025-0633 is a heap-based buffer overflow vulnerability in the iniparser_dumpsection_ini() function within the iniparser library. This vulnerability allows an attacker to perform out-of-bounds memory reads, potentially leading to sensitive information disclosure from process memory.
Critical Impact
Attackers can exploit this heap-based buffer overflow to read beyond allocated memory boundaries, potentially accessing sensitive data stored in adjacent memory regions.
Affected Products
- iniparser library (vulnerable versions contain the affected iniparser_dumpsection_ini() function)
Discovery Timeline
- 2025-02-19 - CVE CVE-2025-0633 published to NVD
- 2025-02-19 - Last updated in NVD database
Technical Details for CVE-2025-0633
Vulnerability Analysis
This vulnerability is classified as CWE-122 (Heap-based Buffer Overflow). The flaw exists within the iniparser_dumpsection_ini() function, which is responsible for dumping INI file section data. Due to improper bounds checking, the function can read memory beyond the allocated heap buffer boundaries.
The local attack vector requires an attacker to have access to the local system where the vulnerable iniparser library is being used. The vulnerability can be triggered by processing a specially crafted INI file or through manipulation of input parameters to the affected function.
Root Cause
The root cause of this vulnerability is insufficient boundary validation in the iniparser_dumpsection_ini() function. When processing section data, the function fails to properly verify that memory read operations remain within the allocated buffer boundaries, resulting in a heap-based buffer over-read condition.
Attack Vector
This is a local attack vector vulnerability. An attacker with local access can exploit this flaw by:
- Providing a maliciously crafted INI file or input data to an application using the vulnerable iniparser library
- Triggering the iniparser_dumpsection_ini() function with parameters that cause an out-of-bounds read
- Extracting sensitive information from adjacent heap memory regions
The vulnerability requires no user interaction and no privileges to exploit once local access is obtained. However, since it only enables memory reads (not writes), the primary impact is limited to confidentiality rather than integrity or availability.
For detailed technical information about the vulnerability, refer to the GitLab Issue Tracker.
Detection Methods for CVE-2025-0633
Indicators of Compromise
- Unexpected crashes or segmentation faults in applications using iniparser library
- Memory access violations logged in system logs when parsing INI files
- Abnormal memory consumption patterns in processes utilizing iniparser
Detection Strategies
- Deploy AddressSanitizer (ASan) or similar memory error detection tools in development and testing environments to identify out-of-bounds memory access
- Implement file integrity monitoring on applications that use the iniparser library
- Enable heap protection mechanisms and monitor for heap corruption alerts
- Review application logs for parsing errors or exceptions related to INI file processing
Monitoring Recommendations
- Monitor for unusual INI file parsing activity or errors in application logs
- Implement runtime application self-protection (RASP) to detect memory safety violations
- Establish baseline behavior for applications using iniparser and alert on anomalies
- Consider deploying endpoint detection and response (EDR) solutions capable of detecting memory exploitation attempts
How to Mitigate CVE-2025-0633
Immediate Actions Required
- Identify all systems and applications utilizing the iniparser library
- Review the GitLab issue for the latest patch information and update to a fixed version when available
- Restrict access to systems running vulnerable applications until patches can be applied
- Implement input validation for INI files processed by applications using iniparser
Patch Information
Patch details and updates are tracked in the iniparser GitLab repository. Monitor this issue for official patches and version updates that address this heap-based buffer overflow vulnerability.
Workarounds
- Restrict local access to systems running applications that use the vulnerable iniparser library
- Validate and sanitize all INI file inputs before processing with iniparser
- Compile applications with memory safety features enabled (stack protector, ASLR, DEP/NX)
- Consider using alternative INI parsing libraries until a patch is available
- Implement application sandboxing to limit the impact of potential exploitation
# Example: Compile with memory safety flags
gcc -fstack-protector-strong -D_FORTIFY_SOURCE=2 -fPIE -pie -Wl,-z,relro,-z,now your_application.c -liniparser -o your_application
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
