CVE-2017-17853 : Security Advisory and Response
Learn about CVE-2017-17853, a vulnerability in the Linux kernel allowing local users to trigger a denial of service or exploit other consequences through inaccurate BPF_RSH signed bounds calculations.
In the Linux kernel up to version 4.14.8, a vulnerability in kernel/bpf/verifier.c allows local users to trigger a denial of service or potentially exploit other consequences by exploiting inaccurate BPF_RSH signed bounds calculations.
Understanding CVE-2017-17853
This CVE entry describes a vulnerability in the Linux kernel that could be exploited by local users to cause a denial of service or other unspecified impacts.
What is CVE-2017-17853?
The vulnerability in kernel/bpf/verifier.c in the Linux kernel up to version 4.14.8 allows local users to trigger a denial of service (memory corruption) or potentially exploit other unspecified consequences by exploiting inaccurate BPF_RSH signed bounds calculations.
The Impact of CVE-2017-17853
The vulnerability could lead to a denial of service (memory corruption) or potentially allow attackers to exploit other unspecified consequences by manipulating BPF_RSH signed bounds calculations.
Technical Details of CVE-2017-17853
This section provides technical details about the CVE.
Vulnerability Description
The vulnerability in kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect BPF_RSH signed bounds calculations.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by local users through inaccurate BPF_RSH signed bounds calculations.
Mitigation and Prevention
Protect your systems from CVE-2017-17853 with the following steps:
Immediate Steps to Take
- Apply relevant patches provided by the Linux kernel maintainers.
- Monitor official sources for updates and security advisories.
Long-Term Security Practices
- Regularly update your Linux kernel to the latest stable version.
- Implement the principle of least privilege to restrict user access.
Patching and Updates
- Stay informed about security updates and patches released by the Linux kernel community.