CVE-2017-5885 : What You Need to Know
Learn about CVE-2017-5885, a vulnerability in gtk-vnc before version 0.7.0 allowing remote servers to trigger buffer overflows, potentially leading to denial of service or arbitrary code execution.
CVE-2017-5885 was published on February 28, 2017, and affects the gtk-vnc library before version 0.7.0. Remote servers can exploit multiple integer overflows in specific functions, potentially leading to denial of service or arbitrary code execution.
Understanding CVE-2017-5885
This CVE involves integer overflows in the vnc_connection_server_message and vnc_color_map_set functions of gtk-vnc.
What is CVE-2017-5885?
Remote servers can manipulate certain functions in gtk-vnc to trigger a buffer overflow, which can result in a denial of service or the execution of arbitrary code.
The Impact of CVE-2017-5885
The vulnerability can be exploited by remote servers to cause a denial of service or potentially execute arbitrary code on the affected system.
Technical Details of CVE-2017-5885
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from multiple integer overflows in specific functions of gtk-vnc, allowing remote servers to trigger a buffer overflow.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: gtk-vnc versions before 0.7.0
Exploitation Mechanism
By manipulating the SetColorMapEntries function, remote servers can exploit the integer overflows to trigger a buffer overflow, potentially leading to a denial of service or arbitrary code execution.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Update gtk-vnc to version 0.7.0 or later to mitigate the vulnerability.
- Monitor for any unusual network activity that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions to patch known vulnerabilities.
- Implement network security measures to restrict access to vulnerable systems.
Patching and Updates
Ensure timely patching of software and libraries to address known vulnerabilities and enhance overall system security.