CVE-2018-10243 : Security Advisory and Response

LibHTP 0.5.26 is vulnerable to a heap-based buffer over-read through an authorization digest header, allowing remote attackers to exploit the htp_parse_authorization_digest function in htp_parsers.c.

Understanding CVE-2018-10243

This CVE entry highlights a security flaw in LibHTP 0.5.26 that can be leveraged by malicious actors to trigger a heap-based buffer over-read.

What is CVE-2018-10243?

The vulnerability in LibHTP 0.5.26 enables remote attackers to exploit the htp_parse_authorization_digest function in htp_parsers.c through an authorization digest header, leading to a heap-based buffer over-read.

The Impact of CVE-2018-10243

The exploitation of this vulnerability can result in a heap-based buffer over-read, potentially allowing attackers to access sensitive information or execute arbitrary code remotely.

Technical Details of CVE-2018-10243

LibHTP 0.5.26's vulnerability can be further understood through its technical aspects.

Vulnerability Description

The issue lies in the htp_parse_authorization_digest function in htp_parsers.c, which can be abused by remote attackers to trigger a heap-based buffer over-read via an authorization digest header.

Affected Systems and Versions

Affected Version: LibHTP 0.5.26
Product: Not applicable
Vendor: Not applicable

Exploitation Mechanism

The vulnerability can be exploited remotely by manipulating the authorization digest header, causing a heap-based buffer over-read.

Mitigation and Prevention

Protecting systems from CVE-2018-10243 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches or updates provided by the vendor promptly.
Monitor network traffic for any suspicious activities related to authorization digest headers.

Long-Term Security Practices

Implement strong network security measures to prevent unauthorized access.
Regularly update and patch software to mitigate known vulnerabilities.

Patching and Updates

Ensure that LibHTP is updated to a secure version that addresses the heap-based buffer over-read vulnerability.