In PHP versions 8.1.* before 8.1.31, 8.2.* before 8.2.26, and 8.3.* before 8.3.14, this vulnerability allows for a potential buffer overread by one byte due to an error in the convert.quoted-printable-decode filter. This can lead to crashes or the disclosure of content from other memory areas under certain circumstances. The CVSS score for this vulnerability is 4.8, indicating a medium severity level.
Risk to organizations includes the potential exposure of sensitive information and application instability. Although this vulnerability is not currently known to be actively exploited, the implications of memory disclosure can be significant. Organizations should prioritize patching immediately to protect their environments.
The urgency for defenders is moderate. Organizations using affected versions of PHP should address this vulnerability as part of their priority patch cycle. It is critical to apply the necessary updates to mitigate the associated risks.
Moreover, this vulnerability falls under the categories of CWE-122 (Heap-based Buffer Overflow) and CWE-787 (Out-of-bounds Write), which highlights the importance of secure coding practices to prevent such vulnerabilities in the future.
Organizations should regularly review their software versions and apply security patches as part of their ongoing security management efforts.
Vulnerability Details
The vulnerability affects PHP component, specifically versions 8.1.* before 8.1.31, 8.2.* before 8.2.26, and 8.3.* before 8.3.14. The official description states that due to an error in the convert.quoted-printable-decode filter, certain data can lead to a buffer overread by one byte. This can potentially lead to crashes or disclose content of other memory areas.
The vulnerability is classified as having a CVSS score of 4.8, indicating a medium severity. The CVSS vector is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L, which suggests a network attack vector and high attack complexity with low confidentiality and availability impacts.
Technical Analysis
The root cause of this vulnerability is an error in handling input data by the convert.quoted-printable-decode filter in PHP. Attackers may leverage this vulnerability by sending specially crafted input to the application, resulting in a buffer overread. The attack vector is network-based, and no user interaction is required for exploitation.
The attack complexity is considered high, meaning that it would require specific conditions to be met for successful exploitation. Privileges required for this vulnerability are none, and there is no user interaction necessary to trigger it.
The impacts on confidentiality are low, as sensitive data may be disclosed, while integrity is not affected. Availability impact is also low, as the vulnerability may lead to crashes but does not necessarily compromise service availability.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is moderate. While it is not actively exploited, the potential for memory disclosure poses a risk to data privacy and application stability. Organizations using the affected PHP versions should be aware of the potential blast radius, especially if sensitive data is processed within their applications.
The urgency assessment is moderate, as the impact of this vulnerability can vary based on the application context. Organizations should schedule remediation as part of their regular security maintenance and prioritize patching for affected PHP versions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include PHP 8.1.* prior to 8.1.31, 8.2.* prior to 8.2.26, and 8.3.* prior to 8.3.14. Organizations running these versions should take immediate action to upgrade to the latest patched versions.
Mitigation & Remediation
Organizations are urged to patch their PHP installations to the latest versions to mitigate this vulnerability. Upgrading to versions 8.1.31, 8.2.26, or 8.3.14 or later is crucial. If immediate patching is not feasible, organizations should consider implementing workarounds or configuration hardening to reduce exposure.
Monitoring for behavioral anomalies and logging relevant events can also help detect potential exploitation attempts. For additional support, organizations may consider engaging with a security partner for comprehensive security assessments, such as application security assessments to evaluate their security posture.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts associated with this vulnerability. Key indicators include unusual application crashes or memory-related errors. Additionally, behavioral anomalies in application performance may signal exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-11233 lies in the ongoing challenges associated with memory management in programming languages like PHP. This vulnerability serves as a reminder of the importance of secure coding practices to mitigate risks. Security teams should take this opportunity to review their development processes and reinforce training on secure coding techniques.
Patterns observed in vulnerabilities like CVE-2024-11233 highlight the need for continuous security testing and proactive vulnerability management. For organizations looking to enhance their security posture, penetration testing services can be instrumental in identifying similar weaknesses.
Finally, security teams should stay informed about emerging trends and vulnerabilities through continuous education and awareness initiatives, including resources such as penetration testing methodology to ensure they are prepared for evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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