CVE-2023-24539 is a high-severity vulnerability affecting the Go programming language. Specifically, this vulnerability allows angle brackets (<>) to be misinterpreted in CSS contexts, which can lead to unexpected behavior if untrusted input is processed. This issue highlights the importance of properly sanitizing input to prevent injection attacks.
The vulnerability has a CVSS score of 7.3, indicating a high severity level. With the potential to compromise the integrity of applications using affected versions, organizations must understand the real-world implications of this flaw. The vulnerability can be exploited over a network with low complexity and no privileges required, making it accessible to a wide range of attackers.
Currently, there are no known exploits in the wild, but the nature of the vulnerability presents a risk that cannot be ignored. Organizations should prioritize patching immediately to prevent any potential exploitation. The urgency for defenders to address this vulnerability is underscored by its high CVSS score and the absence of any security controls that would prevent abuse.
Given the implications of this vulnerability, organizations using the Go programming language should verify their versions against the affected configurations and apply the necessary patches.
Vulnerability Details
The official description of this vulnerability states: 'Angle brackets (<>) are not considered dangerous characters when inserted into CSS contexts. Templates containing multiple actions separated by a '/' character can result in unexpectedly closing the CSS context and allowing for injection of unexpected HTML, if executed with untrusted input.'
This vulnerability is classified under CWE-74 and CWE-94, indicating potential for improper neutralization of special elements used in an injection context and code injection vulnerabilities, respectively. The high CVSS score of 7.3 signals that organizations should take this vulnerability seriously.
The affected product is the Go programming language, specifically versions prior to 1.19.9 and between 1.20.0 and 1.20.4. Organizations should ensure they upgrade to the latest stable release to mitigate the risks associated with this vulnerability.
Technical Analysis
The root cause of CVE-2023-24539 is a failure to properly sanitize CSS values in the Go programming language. This oversight allows attackers to potentially inject malicious HTML code into applications by exploiting the improper handling of angle brackets in CSS contexts.
The attack vector for this vulnerability is network-based, meaning that an attacker can exploit it remotely without the need for physical access to the victim's system. The complexity of the attack is low, as it requires no special privileges or user interaction, making it accessible even to less sophisticated attackers.
The impacts of this vulnerability include low confidentiality, integrity, and availability impacts. However, the potential for malicious code injection poses significant risks to the integrity of applications and could lead to data breaches if exploited.
Risk & Impact Analysis
Organizations using affected versions of the Go programming language face significant risks due to this vulnerability. The potential for attackers to inject unexpected HTML could lead to unauthorized access, data manipulation, or other security breaches. The blast radius could be extensive, especially for applications with wide user bases.
Given the CVSS score of 7.3, organizations should assess this vulnerability with high priority. The urgency for remediation cannot be overstated, as the risks associated with exploitation are substantial. Organizations should prioritize patching immediately to mitigate these risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects the Go programming language versions prior to 1.19.9 and between 1.20.0 and 1.20.4. Organizations should ensure they are running the latest stable version to mitigate risks.
Mitigation & Remediation
To remediate this vulnerability, organizations should patch to the latest version of Go, specifically version 1.20.4 or later. If immediate patching is not possible, consider implementing input validation and sanitization measures to mitigate the risk of injection attacks.
Additionally, organizations may benefit from engaging in penetration testing to identify any potential weaknesses that may arise from this vulnerability.
Detection Guidance
Organizations should monitor logs for any indications of unexpected behavior related to CSS processing. Behavioral anomalies, such as unusual input patterns or unexpected HTML rendering, could suggest attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to expose applications to injection attacks, which continue to be a prevalent threat in the cybersecurity landscape. Organizations are reminded of the importance of secure coding practices to prevent such vulnerabilities from being introduced.
This vulnerability represents a pattern of oversight in handling user input and illustrates the need for developers to remain vigilant against injection-related weaknesses. Security teams should remain proactive in assessing their applications for similar vulnerabilities.
To bolster defenses, organizations should consider implementing a comprehensive vulnerability management program that encompasses regular security assessments and code reviews.
Furthermore, organizations should stay informed about emerging threats and vulnerabilities by following industry best practices and utilizing resources for threat intelligence, such as engaging in penetration testing methodology to assess their security posture and ensure robust defenses.
Lastly, organizations are encouraged to review and strengthen their incident response strategies to effectively address any potential exploitation of vulnerabilities like CVE-2023-24539.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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