CVE-2018-5703 : Security Advisory and Response
Discover the impact of CVE-2018-5703, a Linux kernel vulnerability that could lead to denial of service attacks through a slab out-of-bounds write or other TLS-related impacts. Learn about affected systems, exploitation mechanisms, and mitigation steps.
The function tcp_v6_syn_recv_sock in the Linux kernel may be exploited by attackers to trigger a denial of service attack through a slab out-of-bounds write or other impacts related to TLS.
Understanding CVE-2018-5703
This CVE entry describes a vulnerability in the Linux kernel that could lead to denial of service attacks.
What is CVE-2018-5703?
The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through version 4.14.11 allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impacts via vectors involving TLS.
The Impact of CVE-2018-5703
The vulnerability could be exploited by attackers to trigger denial of service attacks through a slab out-of-bounds write or other unspecified impacts related to TLS.
Technical Details of CVE-2018-5703
This section provides more technical details about the CVE.
Vulnerability Description
The function tcp_v6_syn_recv_sock in the Linux kernel, specifically in the file net/ipv6/tcp_ipv6.c, may be exploited by attackers to trigger a denial of service attack through a slab out-of-bounds write or potentially other unspecified impacts related to TLS.
Affected Systems and Versions
- Affected systems: Linux kernel through version 4.14.11
- Affected versions: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by attackers through vectors involving TLS.
Mitigation and Prevention
Here are the steps to mitigate and prevent exploitation of CVE-2018-5703:
Immediate Steps to Take
- Apply security patches provided by the Linux kernel maintainers.
- Monitor security advisories for updates and apply them promptly.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version.
- Implement network security measures to detect and prevent denial of service attacks.
Patching and Updates
- Stay informed about security updates and patches released by the Linux kernel community.
- Follow best practices for patch management to ensure timely application of security fixes.