A flaw was found in libXpm. When processing files with .Z or .gz extensions, the library calls external programs to compress and uncompress files, relying on the PATH environment variable to find these programs. This reliance could allow a malicious user to execute other programs by manipulating the PATH environment variable.
The CVSS score for this vulnerability is 8.8, categorizing it as high severity. The risk to organizations includes significant impacts on confidentiality, integrity, and availability. Given the nature of the vulnerability, organizations are urged to prioritize patching immediately.
As of now, there is no known public exploit available, and the vulnerability is not included in the Known Exploited Vulnerabilities (KEV) catalog. However, the potential for exploitation remains, emphasizing the need for timely remediation.
Organizations should assess their exposure to this vulnerability, especially if they are using affected versions of libxpm. A proactive approach will help mitigate potential risks associated with this flaw.
Vulnerability Details
The vulnerability identified as CVE-2022-4883 affects the libxpm component of the x.org technology. The flaw allows for arbitrary program execution due to reliance on the PATH environment variable during file processing. The vulnerability has a CVSS score of 8.8, indicating a high severity level, and it was first published on February 7, 2023.
Technical Analysis
The root cause of this vulnerability stems from the way libXpm handles file processing for .Z or .gz file extensions. The library invokes external programs based on the PATH variable, which an attacker can manipulate to execute arbitrary commands. The attack vector is network-based, and the complexity is low, requiring only low privileges to exploit. User interaction is not required, making this vulnerability particularly concerning.
Risk & Impact Analysis
The real-world risk includes the potential for unauthorized program execution, leading to data breaches, loss of integrity, and service disruptions. The blast radius could be significant, particularly if libxpm is used in critical applications or environments. Organizations should assess their deployment of affected products and prioritize remediation based on the severity of this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of libxpm are all versions prior to 3.5.15. Organizations should ensure they are running an updated version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching to the latest version of libxpm. If an immediate patch is not available, consider implementing configuration hardening and network controls to limit exposure. Regular monitoring and assessments can also help in identifying vulnerabilities before they are exploited.
Detection Guidance
Monitoring for unusual behavior associated with libxpm usage can help in early detection of potential exploitation. Log indicators of library usage, and watch for any unauthorized modifications to the PATH environment variable.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of secure coding practices and the need for organizations to regularly assess their software dependencies. Security teams should prioritize vulnerability management to ensure that such flaws do not lead to exploitation.
For further guidance on vulnerability management, organizations can refer to our vulnerability management program. Additionally, for penetration testing strategies, see our penetration testing methodology guide.
Security teams should also consider reviewing our API penetration testing guide to understand potential weaknesses in their applications.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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