Security VulnerabilitiesNews

Linux Kernel rds_cmsg_atomic Function NULL Pointer Dereference Vulnerability

Duncan 2443 Views 0 Comments ,  ,  ,  ,  1 min read

CVE Number = CVE-2018-5333

A vulnerability in Linux Kernel could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability exists in the rds_cmsg_atomic function and is due to insufficient handling of user-supplied input by the affected software. An attacker could exploit this vulnerability to cause a NULL pointer dereference, which could lead to a DoS condition on the targeted system.

Kernel.org has confirmed the vulnerability and released a software patch.

Analysis
To exploit the vulnerability, the attacker would need to send a crafted HTTP request to the targeted system, making exploitation more difficult in environments that restrict network access to untrusted sources.
Safeguards
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators are advised to monitor affected systems.
Vendor Announcements
Fixed Software
  • Kernel.org has released a software patch at the following link: kernel patch




Duncan

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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