CVE-2021-27117 : Vulnerability Insights and Analysis
Learn about CVE-2021-27117, a high-severity vulnerability in Beego through 2.0.2 that allows attackers to exploit symlink attacks locally. Read for impact, affected systems, and mitigation steps.
A vulnerability has been identified in Beego through version 2.0.2 that allows attackers to conduct symlink attacks locally. This vulnerability has a CVSS base score of 7.8, indicating a high severity level.
Understanding CVE-2021-27117
This section will delve into the details of CVE-2021-27117, including its impact, technical description, affected systems, exploitation mechanism, and mitigation strategies.
What is CVE-2021-27117?
The vulnerability exists in the file profile.go within the GetCPUProfile function in Beego versions up to 2.0.2. Attackers can exploit this issue to carry out symlink attacks locally.
The Impact of CVE-2021-27117
The impact of CVE-2021-27117 is rated as high, with a CVSS base severity score of 7.8. It has a significant impact on confidentiality, integrity, and availability, with low privileges required for exploitation.
Technical Details of CVE-2021-27117
Let's explore the technical aspects of CVE-2021-27117, including its vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability in profile.go allows attackers to launch symlink attacks locally, posing a serious security risk to affected systems.
Affected Systems and Versions
Beego versions up to 2.0.2 are affected by this vulnerability, exposing them to the risks associated with symlink attacks.
Exploitation Mechanism
Attackers with local access can exploit this vulnerability in Beego by leveraging symlink attacks to compromise the targeted systems.
Mitigation and Prevention
This section will outline the steps that organizations and users can take to mitigate the risks posed by CVE-2021-27117 and prevent potential exploitation.
Immediate Steps to Take
Users are advised to update Beego to a patched version that addresses the symlink attack issue. Limiting local access to trusted entities can also reduce the risk of exploitation.
Long-Term Security Practices
Implementing strong access controls, regularly updating software components, and monitoring for symlink-related activities can enhance long-term security posture.
Patching and Updates
It is crucial to stay informed about security advisories from Beego and apply patches promptly to protect against known vulnerabilities in the software.