CVE-2018-11773 : Security Advisory and Response

Apache VCL versions 2.1 through 2.5 have a vulnerability related to improper form validation in block allocation management.

Understanding CVE-2018-11773

This CVE involves inadequate form input validation in Apache VCL versions 2.1 through 2.5, potentially leading to a security vulnerability.

What is CVE-2018-11773?

The validation of form input in Apache VCL versions 2.1 through 2.5 is insufficient when processing a submitted block allocation. This vulnerability could be exploited due to the use of form data as an argument for the php function strtotime.

The Impact of CVE-2018-11773

The vulnerability allows for a potential attack on the underlying implementation of the strtotime function in Apache VCL versions 2.1 through 2.5.

Technical Details of CVE-2018-11773

Apache VCL versions 2.1 through 2.5 are affected by this vulnerability.

Vulnerability Description

The validation of form input in block allocation management is improperly handled in Apache VCL versions 2.1 through 2.5.

Affected Systems and Versions

Product: VCL
Vendor: Apache
Versions: 2.1 through 2.5

Exploitation Mechanism

The form data is used as an argument for the php function strtotime, creating a potential vulnerability.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Upgrade Apache VCL systems running versions prior to 2.5.1 to mitigate the vulnerability.

Long-Term Security Practices

Implement robust form input validation mechanisms to prevent similar vulnerabilities.

Patching and Updates

Ensure all VCL systems are updated or patched to versions that address this security flaw.