CVE-2017-11600 : What You Need to Know
Learn about CVE-2017-11600, a vulnerability in the Linux kernel version 4.12.3 and below that allows local users to trigger a denial of service attack through out-of-bounds access or potentially cause other unspecified impacts.
In the Linux kernel version 4.12.3 and below, a vulnerability exists in the file net/xfrm/xfrm_policy.c. This flaw, when the CONFIG_XFRM_MIGRATE option is enabled, allows local users to trigger a denial of service attack through out-of-bounds access or potentially cause other unspecified impacts by sending a crafted XFRM_MSG_MIGRATE xfrm Netlink message.
Understanding CVE-2017-11600
This CVE entry describes a vulnerability in the Linux kernel that can be exploited by local users to disrupt system operations.
What is CVE-2017-11600?
The vulnerability in the Linux kernel version 4.12.3 and below allows local users to trigger a denial of service attack through out-of-bounds access or potentially cause other unspecified impacts.
The Impact of CVE-2017-11600
The vulnerability can lead to a denial of service attack and potentially other unspecified impacts by exploiting a flaw in the Linux kernel.
Technical Details of CVE-2017-11600
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw in net/xfrm/xfrm_policy.c in the Linux kernel through 4.12.3, when CONFIG_XFRM_MIGRATE is enabled, allows local users to cause a denial of service or other unspecified impacts via an XFRM_MSG_MIGRATE xfrm Netlink message.
Affected Systems and Versions
- Affected System: Linux kernel version 4.12.3 and below
- Affected Component: net/xfrm/xfrm_policy.c
Exploitation Mechanism
The vulnerability can be exploited by local users through out-of-bounds access or by sending a crafted XFRM_MSG_MIGRATE xfrm Netlink message.
Mitigation and Prevention
To address CVE-2017-11600, follow these mitigation strategies:
Immediate Steps to Take
- Disable CONFIG_XFRM_MIGRATE if not required
- Apply patches provided by the Linux kernel maintainers
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version
- Implement the principle of least privilege to limit user access
Patching and Updates
- Stay informed about security advisories from Linux kernel vendors
- Apply security patches promptly to mitigate known vulnerabilities