CVE-2017-13136 Explained : Impact and Mitigation
Learn about CVE-2017-13136, an integer overflow vulnerability in libbpg 0.9.7 that can lead to a NULL pointer dereference. Find out how to mitigate and prevent exploitation.
In the libbpg version 0.9.7, an integer overflow vulnerability exists in the image_alloc function of the bpgenc.c file. This flaw can lead to an invalid malloc operation and result in a NULL pointer dereference.
Understanding CVE-2017-13136
This CVE entry describes a specific vulnerability in the libbpg library version 0.9.7.
What is CVE-2017-13136?
The vulnerability in CVE-2017-13136 is an integer overflow issue in the image_alloc function of the bpgenc.c file within libbpg version 0.9.7. This flaw can trigger an invalid malloc operation and subsequently cause a NULL pointer dereference.
The Impact of CVE-2017-13136
The presence of this vulnerability can potentially lead to a denial of service (DoS) condition or arbitrary code execution by an attacker exploiting the NULL pointer dereference.
Technical Details of CVE-2017-13136
This section provides more in-depth technical details about the CVE.
Vulnerability Description
The image_alloc function in bpgenc.c in libbpg 0.9.7 suffers from an integer overflow, resulting in an invalid malloc operation and a subsequent NULL pointer dereference.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by an attacker crafting a malicious input that triggers the integer overflow in the image_alloc function, leading to the subsequent NULL pointer dereference.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-13136.
Immediate Steps to Take
- Update to a patched version of libbpg that addresses the integer overflow vulnerability.
- Monitor for any unusual system behavior that might indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software libraries and components to ensure the latest security patches are applied.
- Conduct security assessments and code reviews to identify and mitigate similar vulnerabilities in the future.
Patching and Updates
- Apply patches provided by the libbpg project to fix the integer overflow vulnerability.