CVE-2023-26487 is a medium-severity vulnerability identified in the Vega visualization framework, specifically within the lassoAppend function. The vulnerability arises from the function's inability to enforce proper types for its arguments, which can lead to various cross-site scripting (XSS) vectors. This issue is particularly concerning as it may allow attackers to execute arbitrary functions through the manipulation of the first argument. The risk to organizations includes the potential for data exfiltration and unauthorized access, depending on the context of the application.
The CVSS score for this vulnerability is 6.5, indicating a medium level of risk. The attack vector is network-based, with low complexity and no privileges required for exploitation. It is crucial for organizations using affected versions of the Vega framework to address this vulnerability promptly to prevent possible exploitation.
This vulnerability was disclosed on March 4, 2023, and has been modified since its initial release. A patch was implemented in version 5.23.0, which organizations must apply to mitigate the risks associated with this security issue.
Given the nature of this vulnerability, it is essential for security teams to prioritize patching to protect their applications from potential attacks. Organizations should also consider establishing a robust monitoring strategy to detect any unusual activities that may indicate exploitation attempts.
Vulnerability Details
The vulnerability in CVE-2023-26487 is characterized as a cross-site scripting (XSS) issue due to improper input validation in the lassoAppend function of the Vega framework. The function accepts three arguments, where the first is expected to be an array. However, this requirement is not enforced, which allows any object with a push function to be passed as the first argument. This flaw can lead to various XSS vectors depending on the context and environment of the application.
The CVSS 3.1 base score for this vulnerability is 6.5, indicating a medium severity level. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N, reflecting a network attack vector with low complexity and no required privileges or user interaction. The impacts on confidentiality and integrity are assessed as low, with no availability impact.
The vulnerability is associated with CWE-79, which pertains to improper neutralization of input during web page generation (Cross-site Scripting). Organizations using versions prior to the patched version 5.23.0 of Vega should consider immediate remediation.
Technical Analysis
The root cause of CVE-2023-26487 lies in the lack of type enforcement in the lassoAppend function. This function is designed to modify an array by pushing additional elements into it. However, since the first argument is not strictly validated as an array, attackers can exploit this weakness by passing in objects that provide a push method, such as console.log or other potentially malicious functions.
The attack vector for this vulnerability is network-based, making it reachable through standard web application requests. The attack complexity is low, as it does not require sophisticated techniques or extensive privileges, allowing unauthenticated users to exploit the vulnerability. Additionally, there is no need for user interaction, meaning the exploit could be automated.
The confidentiality and integrity impacts of this vulnerability are categorized as low, which means that while exploitation may lead to unauthorized data exposure or modification, the potential extent of damage may vary based on the specific application context.
Risk & Impact Analysis
Real-world deployment of the Vega framework with this vulnerability exposes organizations to significant risk, particularly those that rely on user-generated content or external data for visualization. The potential for XSS attacks enables attackers to inject scripts that could compromise user data or manipulate the application's behavior, leading to a loss of trust and potential regulatory repercussions.
The urgency for organizations to address this vulnerability is underscored by the CVSS score of 6.5. Organizations should prioritize patching this vulnerability to safeguard their applications. Given that the vulnerability has been publicly disclosed, the likelihood of exploitation increases, necessitating rapid response and remediation efforts.
In addition to patching, organizations should evaluate their security posture to identify any related weaknesses in their application development lifecycle. Implementing strict input validation and output encoding practices can help mitigate the risk of similar vulnerabilities arising in the future.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the Vega framework include any versions of vega-functions prior to 5.13.1 and versions of vega prior to 5.23.0. Organizations utilizing these versions should ensure they update to the latest patched versions to mitigate the identified vulnerability.
Mitigation & Remediation
To mitigate the risks associated with CVE-2023-26487, organizations should upgrade to version 5.23.0 or later of the Vega framework. This version includes critical patches to address the vulnerability. If immediate patching is not possible, organizations should implement input validation to limit the types of arguments that the lassoAppend function can accept.
Organizations may also consider conducting security assessments, such as application security assessments to identify any other vulnerabilities present in their systems.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, such as unusual requests or error messages that may indicate attempts to manipulate the lassoAppend function. Behavioral anomalies in application performance could also be indicative of exploitation.
AppSecure Threat Intelligence Insight
CVE-2023-26487 highlights the importance of strict type enforcement in function arguments to prevent vulnerabilities that can lead to XSS attacks. As organizations increasingly rely on visualization tools and libraries, understanding how vulnerabilities can arise from improper input handling is critical.
The lessons learned from this vulnerability underscore the necessity for security teams to integrate security into their development processes. Regular code reviews and security assessments can help identify potential weaknesses before they are exploited.
For organizations using Vega, it is essential to maintain awareness of vulnerabilities and patches. Implementing a proactive security strategy that includes regular updates can significantly reduce the attack surface.
For further insights into vulnerability management, organizations can refer to our vulnerability management program and explore best practices for maintaining security.
Organizations should also consider engaging in continuous security testing to identify and remediate vulnerabilities proactively. Services such as continuous penetration testing provide valuable insights into potential weaknesses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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