CVE-2017-5972

HIGH

Linux Kernel 3.0.0-3.19.8 - Denial of Service via TCP SYN Flood

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-5972. PoCs published by FarazPajohan.

AI-analyzed exploit summary This exploit targets a vulnerability in the rsyslog daemon on CentOS 7, causing a denial-of-service (DoS) by flooding the target with malformed TCP/UDP/ICMP packets, leading to 100% CPU usage. The code includes packet crafting and raw socket operations to achieve this effect.

Description

The TCP stack in the Linux kernel 3.x does not properly implement a SYN cookie protection mechanism for the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many TCP SYN packets, as demonstrated by an attack against the kernel-3.10.0 package in CentOS Linux 7. NOTE: third parties have been unable to discern any relationship between the GitHub Engineering finding and the Trigemini.c attack code.

Exploits (1)

exploitdb WORKING POC

by FarazPajohan · cdoslinux

https://www.exploit-db.com/exploits/41350

View Code ZIP pw:eip

This exploit targets a vulnerability in the rsyslog daemon on CentOS 7, causing a denial-of-service (DoS) by flooding the target with malformed TCP/UDP/ICMP packets, leading to 100% CPU usage. The code includes packet crafting and raw socket operations to achieve this effect.

Classification

Working Poc 90%

Attack Type

Dos

Complexity

Moderate

Reliability

Reliable

Target: CentOS 7 with rsyslog daemon

No auth needed

Prerequisites: Network access to the target's rsyslog port (514 TCP/UDP) · Raw socket permissions on the attacking machine

MITRE ATT&CK