CVE-2018-11469 : Exploit Details and Defense Strategies

CVE-2018-11469 was published on May 25, 2018, and affects HAProxy versions 1.8.0 through 1.8.9. Attackers can exploit this vulnerability to gain unauthorized access through an information disclosure technique.

Understanding CVE-2018-11469

This CVE involves incorrect caching of responses to requests containing an Authorization header in HAProxy versions 1.8.0 through 1.8.9.

What is CVE-2018-11469?

Attackers can exploit an issue in HAProxy versions 1.8.0 through 1.8.9, allowing unauthorized access through an information disclosure technique.
The vulnerability arises from incorrect caching of responses to requests with an Authorization header.

The Impact of CVE-2018-11469

Unauthorized access can be gained through an information disclosure technique utilizing unauthenticated remote requests.
The vulnerability is located in the check_request_for_cacheability function within the proto_http.c component.

Technical Details of CVE-2018-11469

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in HAProxy versions 1.8.0 through 1.8.9 allows attackers to achieve information disclosure via unauthenticated remote requests.

Affected Systems and Versions

HAProxy versions 1.8.0 through 1.8.9 are affected by this vulnerability.

Exploitation Mechanism

Attackers exploit the incorrect caching of responses to requests containing an Authorization header when the cache is enabled.

Mitigation and Prevention

Protecting systems from CVE-2018-11469 requires immediate steps and long-term security practices.

Immediate Steps to Take

Disable caching if not essential to prevent exploitation.
Monitor and filter incoming requests for suspicious activity.

Long-Term Security Practices

Regularly update HAProxy to the latest version to patch known vulnerabilities.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Apply patches provided by HAProxy to address the vulnerability and enhance system security.