CVE-2018-14645 : What You Need to Know

HAProxy, prior to version 1.8.14, contained a defect in its HPACK decoder, leading to a remote crash and denial of service.

Understanding CVE-2018-14645

This CVE involves a vulnerability in HAProxy's HPACK decoder, affecting versions before 1.8.14.

What is CVE-2018-14645?

The vulnerability in HAProxy's HPACK decoder allowed for an out-of-bounds read access within the hpack_valid_idx() function.
This flaw could be exploited remotely, resulting in a crash and denial of service.

The Impact of CVE-2018-14645

CVSS Base Score: 7.5 (High)
Attack Vector: Network
Attack Complexity: Low
Availability Impact: High
Privileges Required: None
Scope: Unchanged

Technical Details of CVE-2018-14645

HAProxy's vulnerability and its implications.

Vulnerability Description

The flaw in the HPACK decoder of HAProxy before version 1.8.14 allowed for an out-of-bounds read access in hpack_valid_idx().

Affected Systems and Versions

Affected Product: HAProxy
Affected Version: 1.8.14

Exploitation Mechanism

Attackers could exploit this vulnerability remotely to cause a crash and denial of service.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-14645 vulnerability.

Immediate Steps to Take

Update HAProxy to version 1.8.14 or later to mitigate the vulnerability.
Monitor HAProxy instances for any unusual activity that could indicate exploitation.

Long-Term Security Practices

Regularly update and patch HAProxy to ensure the latest security fixes are in place.
Implement network security measures to detect and prevent potential attacks.

Patching and Updates

Stay informed about security advisories from HAProxy and apply patches promptly to address any new vulnerabilities.