CVE-2022-2119 : Exploit Details and Defense Strategies
Discover the impact and mitigation of CVE-2022-2119, a path traversal vulnerability in OFFIS DCMTK allowing attackers to execute code by injecting DICOM files into arbitrary directories.
OFFIS DCMTK's service class provider (SCP) is vulnerable to path traversal, allowing remote code execution through the injection of DICOM files into arbitrary directories.
Understanding CVE-2022-2119
This CVE identifies a vulnerability in OFFIS DCMTK that permits unauthorized writing of DICOM files in specific directories.
What is CVE-2022-2119?
In this CVE, versions of OFFIS DCMTK prior to 3.6.7 are susceptible to a path traversal flaw. Attackers can exploit this vulnerability to execute code remotely.
The Impact of CVE-2022-2119
The vulnerability can have a severe impact due to the ability of an attacker to write DICOM files into arbitrary directories with controlled names, potentially leading to remote code execution.
Technical Details of CVE-2022-2119
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability lies in OFFIS DCMTK's service class provider (SCP), which lacks proper restrictions on pathnames. This allows attackers to write DICOM files into directories not intended for that purpose.
Affected Systems and Versions
All versions preceding 3.6.7 of DCMTK by OFFIS are affected by this vulnerability.
Exploitation Mechanism
Attackers can leverage the path traversal vulnerability to inject DICOM files into chosen directories, leading to unauthorized code execution.
Mitigation and Prevention
In light of the severity of this CVE, it is crucial to take immediate steps to mitigate the risks and prevent any potential exploitation.
Immediate Steps to Take
It is recommended to update DCMTK to version 3.6.7 or newer to address this vulnerability. Additionally, restricting network access to vulnerable systems can reduce the attack surface.
Long-Term Security Practices
Implementing secure coding practices and conducting regular security assessments can help in identifying and addressing such vulnerabilities in the future.
Patching and Updates
Stay informed about security updates for DCMTK and apply patches promptly to protect the system from known vulnerabilities.