CVE-2021-23631 is a high-severity vulnerability affecting all versions of the convert-svg-core, convert-svg-to-png, and convert-svg-to-jpeg packages. This vulnerability allows attackers to utilize specially crafted SVG files to read arbitrary files from the file system, subsequently displaying the file content as converted PNG images. The attack vector for this vulnerability is deemed to be network-based, which increases the risk for organizations that utilize these packages in their applications.
The CVSS score for this vulnerability is 7.5, categorized as high severity. This score highlights the significant risk posed by the vulnerability, as it enables unauthorized access to sensitive data on systems that utilize the affected packages. Organizations using these libraries should prioritize patching to mitigate potential exploitation.
Currently, there is no public exploit confirmed for CVE-2021-23631, but given the nature of the vulnerability and its high CVSS score, organizations are urged to take this threat seriously. The lack of known exploits does not diminish the necessity for immediate action due to the potential for exploitation in the wild.
Organizations should prioritize mitigating the risks associated with this vulnerability, especially considering the high confidentiality impact assessed. Immediate remediation is crucial to prevent potential unauthorized file access.
Vulnerability Details
The official description of CVE-2021-23631 notes that it affects all versions of the convert-svg-core, convert-svg-to-png, and convert-svg-to-jpeg packages. The vulnerability is classified under CWE-22, indicating a directory traversal issue. The CVSS version 3.1 vector string for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, and it has a base score of 7.5. This highlights the significant confidentiality impact, while integrity and availability impacts remain non-existent.
Technical Analysis
The root cause of this vulnerability lies in the handling of SVG files, which allows attackers to exploit weaknesses in the parsing and processing of these files. The attack vector is network-based, requiring no user interaction, and the complexity of the attack is low, making it accessible for potential attackers. The required privileges are none, which further amplifies the risk.
As a result of this vulnerability, there is a high confidentiality impact with the potential for unauthorized access to sensitive files. Organizations should implement strict security measures to monitor and control file uploads to prevent potential exploitation.
Risk & Impact Analysis
Risk to organizations includes exposure of sensitive data due to unauthorized file reads facilitated by the vulnerability. The potential blast radius is significant, as the affected packages are commonly used in various applications. The urgency for organizations to address this vulnerability is high, given its CVSS score of 7.5 and the potential for exploitation in a networked environment.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of the convert-svg-core, convert-svg-to-png, and convert-svg-to-jpeg packages are affected by this vulnerability. Organizations should ensure that they update to the latest patched versions as soon as they are available.
Mitigation & Remediation
To mitigate the risks associated with CVE-2021-23631, organizations should prioritize updating their packages to the latest versions that address this vulnerability. Configuration hardening can also help reduce exposure to potential attacks. For organizations unable to immediately patch, implementing strict input validation on SVG files and monitoring file access logs can help limit the impact of this vulnerability. For further assistance, consider utilizing our penetration testing services to evaluate the security posture against such vulnerabilities.
Detection Guidance
Organizations should monitor logs for unusual file access patterns, particularly attempts to access sensitive files via the convert-svg-core and related packages. Behavioral anomalies related to file conversions should also be flagged for further investigation.
AppSecure Threat Intelligence Insight
CVE-2021-23631 highlights the ongoing risks associated with using third-party libraries without adequate security measures. Organizations must remain vigilant in monitoring dependencies and applying updates. This vulnerability serves as a reminder of the necessity for comprehensive application security assessments and proactive measures in the software development lifecycle. For more insights, organizations can refer to our resources on penetration testing methodology and explore strategies for enhancing security postures through vulnerability management programs. Additionally, consider implementing continuous security testing to ensure ongoing protection from emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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