The vulnerability identified as CVE-2022-47655 affects Libde265 version 1.0.9, allowing for a buffer overflow in the function void put_qpel_fallback<unsigned short>. With a CVSS score of 7.8, this vulnerability is classified as high severity, indicating it poses a significant risk to affected systems.
Risk to organizations includes potential unauthorized access and system disruption, as the buffer overflow can lead to arbitrary code execution under certain conditions. The attack vector is local, which means an attacker must have access to the system to exploit the vulnerability. Furthermore, user interaction is required for successful exploitation, adding an additional layer of complexity for attackers.
Organizations should prioritize patching immediately. The vulnerability was published on January 5, 2023, and remains relevant as no public exploit has been confirmed. However, it is crucial to remain vigilant as the situation may evolve.
The urgency for defenders is high due to the potential impact of a successful exploit. Immediate action is necessary to mitigate risks associated with this vulnerability.
Vulnerability Details
Libde265 1.0.9 is vulnerable to a buffer overflow in the function void put_qpel_fallback<unsigned short>. This vulnerability falls under CWE-787, indicating improper control of a buffer's length. The vulnerability's CVSS score is 7.8, indicating a high severity level due to its potential impact on confidentiality, integrity, and availability.
Affected products include Libde265 and Debian Linux 10.0, with the vulnerability identified as being from the Debian and Struktur vendors. The vulnerability was officially published on January 5, 2023.
Technical Analysis
The root cause of this vulnerability is a buffer overflow that occurs when the function void put_qpel_fallback<unsigned short> does not adequately check the bounds of the data being processed. Attackers may leverage this flaw by providing specially crafted input, leading to memory corruption.
The attack vector is local, meaning that an attacker must have access to the vulnerable system. The attack complexity is low, as it does not require specialized knowledge or advanced techniques. Privileges required are none, as unprivileged users can exploit this vulnerability. User interaction is, however, required, meaning that a user must trigger the vulnerable function for the exploit to succeed.
The impact on confidentiality, integrity, and availability is high, as successful exploitation can lead to unauthorized access and system crashes.
Risk & Impact Analysis
Real-world deployment risk for this vulnerability is significant. Organizations using Libde265 should assess their exposure and the potential blast radius of an exploit. The level of urgency for remediation is high; organizations should prioritize updating their systems to mitigate this vulnerability's threats.
Given the CVSS score of 7.8, the potential for exploitation is considerable, especially in local environments where user interaction could be easily manipulated by attackers. Organizations should evaluate their security posture and implement necessary patches as part of their priority patch cycle.
The urgency assessment based on the CVSS score and the lack of confirmed public exploits indicates that organizations must act swiftly to prevent the risks associated with this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include Libde265 version 1.0.9 and Debian Linux 10.0. Organizations should consider all versions prior to vendor patch for remediation.
Mitigation & Remediation
Organizations should upgrade to patched versions of Libde265 and Debian Linux. Patching is the most effective way to eliminate the vulnerabilities. In addition to patching, organizations should implement configuration hardening and establish network controls to limit the exposure of vulnerable components.
For further information regarding penetration testing, organizations can utilize penetration testing services to validate their security posture.
Monitoring for behavioral anomalies and implementing network signatures can further enhance detection capabilities.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, such as unusual access to the vulnerable function. Behavioral anomalies, including unexpected application crashes or abnormal resource consumption, should also be investigated. Additionally, establishing network signatures can help detect malicious activity targeting the vulnerable components.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-47655 lies in its representation of common vulnerabilities that can be exploited in local environments. This highlights the importance of thorough security testing and regular updates to software components.
Security teams should learn from this vulnerability by ensuring robust testing practices are in place, particularly for libraries and components that are integrated into larger systems.
Organizations can benefit from reviewing their vulnerability management programs to identify potential weaknesses and address them proactively. For insights into building effective programs, consider reviewing the vulnerability management program design guide.
In summary, CVE-2022-47655 serves as a reminder that even local vulnerabilities can have substantial impacts. Security teams must prioritize vigilance and update their defenses accordingly.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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