The CVE-2023-42468 vulnerability affects the com.cutestudio.colordialer application through version 2.1.8-2 for Android. This vulnerability allows a remote attacker to initiate phone calls without user consent, resulting from improper export of the com.cutestudio.dialer.activities.DialerActivity component. A third-party application, without any permissions, can craft an intent targeting this component via the android.intent.action.CALL action in conjunction with a tel: URI, thereby placing a phone call.
With a CVSS score of 5.3, this vulnerability is classified as medium severity. The attack vector is network-based, indicating that it can be exploited remotely. The low attack complexity means that attackers do not require advanced skills to exploit this vulnerability. Organizations should prioritize patching immediately to mitigate the risk of unauthorized communications.
Risk to organizations includes unauthorized phone calls, which can lead to financial and reputational damage. Given the nature of this vulnerability, it is crucial for defenders to understand the potential impact and urgency for remediation, as exploitation may not be immediately visible.
As of now, there is no confirmed public exploit available, but the presence of a proof of concept (PoC) on GitHub suggests that the risk of exploitation exists. Organizations should take this vulnerability seriously and implement necessary defenses.
Vulnerability Details
The official description of this vulnerability highlights its ability to allow unauthorized phone calls due to the improper export of a critical component. The specific CVSS score of 5.3 indicates a medium level of risk, necessitating prompt attention from security teams.
This vulnerability is associated with CWE-269, indicating a failure to enforce proper access controls. Organizations using the affected version of the color_phone application should consider this vulnerability in their threat model.
Technical Analysis
The root cause of this vulnerability stems from an improper export of the DialerActivity component. Attackers may leverage this flaw by sending crafted intents that trigger the phone call functionality without user consent. The attack vector is network-based, allowing exploitation over the internet, while the attack complexity is low, meaning that minimal skills are required to perform the attack.
No privileges are required to exploit this vulnerability, and user interaction is not needed, making it particularly dangerous. The confidentiality impact is none, while the integrity impact is low due to the unauthorized nature of the calls made. There is no impact on availability.
Risk & Impact Analysis
Real-world deployment of this vulnerability poses significant risks to organizations. Attackers could potentially exploit this vulnerability to initiate unauthorized calls, leading to fraud, harassment, or other malicious activities. The blast radius for this vulnerability could extend to users' privacy and financial security.
Organizations should assess their exposure to this vulnerability and take immediate action to update the affected applications. The urgency for remediation is heightened by the potential for exploitation and the absence of robust defenses against such attacks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the color_phone application prior to version 2.1.8-2. Organizations using previous versions should update to the latest version to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations must update the color_phone application to version 2.1.8-3 or later. If immediate updates cannot be applied, implementing network controls to limit the exposure of the application may provide a temporary measure of defense.
Additionally, organizations should validate their security posture through penetration testing to identify and remediate similar vulnerabilities.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized calls initiated through the affected application. Behavioral anomalies, such as unexpected call patterns or spikes in call volume, should also be investigated. Implementing network signatures to detect unauthorized intents targeting the DialerActivity can further enhance detection capabilities.
AppSecure Threat Intelligence Insight
The significance of CVE-2023-42468 lies in the persistent issue of improper component access in mobile applications. This vulnerability underscores the importance of secure coding practices and thorough testing of application components to prevent unauthorized actions. Security teams should take this incident as a reminder to regularly review their applications for similar vulnerabilities.
Organizations are encouraged to adopt a proactive approach to security by integrating security assessments into their development lifecycle. For additional guidance, consider reviewing our resources on penetration testing methodology that can help identify and mitigate risks effectively.
Additionally, organizations should consider our vulnerability management program for a comprehensive approach to securing applications and reducing exposure to threats.
By understanding the implications of vulnerabilities like CVE-2023-42468, organizations can bolster their security posture and protect against potential exploitation.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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