EulerOS Virtualization 2.5.1 : kernel (EulerOS-SA-2018-1322)
High Nessus Plugin ID 118367
SynopsisThe remote EulerOS Virtualization host is missing a security update.
DescriptionAccording to the version of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :
- A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A remote attacker could use this flaw to trigger time and calculation expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system. Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open port, thus the attacks cannot be performed using spoofed IP addresses.
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected kernel package.