CVE-2018-6548 : Security Advisory and Response
Learn about CVE-2018-6548, a critical use-after-free vulnerability in libwebm up to February 2, 2018, allowing attackers to execute arbitrary code and compromise system security. Find mitigation steps here.
CVE-2018-6548 was published on February 2, 2018, and relates to a use-after-free vulnerability in the libwebm software. The issue stems from a problem in the Vp9HeaderParser class, leading to a dangling pointer.
Understanding CVE-2018-6548
This CVE entry highlights a critical vulnerability in libwebm that could be exploited by attackers.
What is CVE-2018-6548?
The vulnerability in libwebm up to February 2, 2018, allows for a use-after-free scenario due to improper handling of pointers, potentially leading to a security breach.
The Impact of CVE-2018-6548
The use-after-free flaw in libwebm could be exploited by malicious actors to execute arbitrary code, compromise system integrity, and potentially lead to a denial of service.
Technical Details of CVE-2018-6548
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The issue arises when the Vp9HeaderParser's 'frame_' property is not updated correctly, causing a dangling pointer that could be leveraged by attackers.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions of libwebm up to February 2, 2018
Exploitation Mechanism
The vulnerability can be exploited by manipulating the 'frame_' property of the Vp9HeaderParser class, leading to a situation where a freed frame object still has a pointer associated with it.
Mitigation and Prevention
Protecting systems from CVE-2018-6548 requires immediate action and long-term security measures.
Immediate Steps to Take
- Apply patches or updates provided by the software vendor promptly.
- Monitor security advisories for any new information or patches related to this vulnerability.
Long-Term Security Practices
- Implement secure coding practices to prevent similar vulnerabilities in the future.
- Conduct regular security assessments and audits to identify and address potential weaknesses.
Patching and Updates
Ensure that the libwebm software is updated to a version that addresses the use-after-free vulnerability to mitigate the risk of exploitation.