CVE-2021-27764 : Exploit Details and Defense Strategies
Learn about CVE-2021-27764, a vulnerability in HCL BigFix WebUI allowing cookies to be set without HTTPOnly or Secure flags, impacting data confidentiality and integrity.
This article provides an in-depth analysis of CVE-2021-27764, a vulnerability found in HCL BigFix WebUI with missing cookie attributes.
Understanding CVE-2021-27764
CVE-2021-27764 is a vulnerability in the HCL BigFix WebUI that allows for the setting of cookies without the HTTPOnly or Secure flags.
What is CVE-2021-27764?
The vulnerability involves the setting of cookies without proper security flags in the HCL BigFix WebUI, potentially exposing sensitive information.
The Impact of CVE-2021-27764
With a CVSS base score of 7.4 (High severity), this vulnerability can lead to unauthorized access to confidential data stored in cookies, posing a risk to user privacy and data integrity.
Technical Details of CVE-2021-27764
The technical details of CVE-2021-27764 provide insight into the vulnerability's description, affected systems, and exploitation mechanisms.
Vulnerability Description
HCL BigFix WebUI allows cookies to be set without the essential HTTPOnly flag, which could expose sensitive information to unauthorized entities.
Affected Systems and Versions
The vulnerability affects versions 9.0 and 10.0 of HCL BigFix WebUI.
Exploitation Mechanism
Attackers can exploit this vulnerability by intercepting unsecured cookies to gain access to sensitive data within the HCL BigFix WebUI environment.
Mitigation and Prevention
It is crucial to take immediate steps to secure systems and prevent exploitation of CVE-2021-27764.
Immediate Steps to Take
- Update to the latest version of HCL BigFix WebUI that addresses the cookie attribute issue.
- Monitor and restrict access to sensitive data that could be exposed through cookies.
Long-Term Security Practices
- Implement secure cookie handling practices to ensure sensitive information is protected.
- Conduct regular security assessments to identify and address vulnerabilities proactively.
Patching and Updates
Stay informed about security patches and updates released by HCL Software for HCL BigFix WebUI to address CVE-2021-27764.