CVE-2022-28131 Explained : Impact and Mitigation
Discover the impact of CVE-2022-28131 on Go's encoding/xml package. Learn about uncontrolled recursion leading to stack exhaustion and how to mitigate this vulnerability.
A vulnerability has been identified in the Go standard library's encoding/xml prior to versions 1.17.12 and 1.18.4. This vulnerability, known as 'Stack exhaustion from deeply nested XML documents in encoding/xml,' could be exploited by an attacker to trigger a panic due to stack exhaustion by utilizing uncontrolled recursion in Decoder.Skip.
Understanding CVE-2022-28131
This section delves into the details of the CVE-2022-28131 vulnerability.
What is CVE-2022-28131?
The CVE-2022-28131 vulnerability arises from uncontrolled recursion in Decoder.Skip in the encoding/xml package, enabling an attacker to induce a panic through stack exhaustion by utilizing a deeply nested XML document.
The Impact of CVE-2022-28131
The impact of this vulnerability is severe as it allows threat actors to exploit the uncontrolled recursion in Decoder.Skip to overwhelm the stack, resulting in a system panic.
Technical Details of CVE-2022-28131
In this section, we explore the technical aspects of the CVE-2022-28131 vulnerability.
Vulnerability Description
The vulnerability allows for stack exhaustion when processing deeply nested XML documents due to uncontrolled recursion in Decoder.Skip.
Affected Systems and Versions
The affected systems include versions of the Go standard library's encoding/xml prior to 1.17.12 and 1.18.4.
Exploitation Mechanism
Exploiting this vulnerability involves crafting a deeply nested XML document to trigger uncontrolled recursion in the Decoder.Skip function.
Mitigation and Prevention
To safeguard against CVE-2022-28131, immediate steps and long-term security practices are crucial.
Immediate Steps to Take
Developers and system administrators should update the Go library to versions 1.17.12 or 1.18.4 to mitigate the vulnerability.
Long-Term Security Practices
Implement secure coding practices to avoid uncontrolled recursion vulnerabilities in your codebase.
Patching and Updates
Regularly update dependencies and libraries to ensure that your systems are protected against known vulnerabilities.