SID 1:40063

Rule Category

OS-LINUX -- Snort has detected traffic targeting vulnerabilities in a Linux-based operating system. This does not include browser traffic or other software on the OS, but attacks against the OS itself.

Alert Message

OS-LINUX Linux Kernel Challenge ACK provocation attempt

Rule Explanation

net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind in-window attack. Impact: CVSS base score 4.8 CVSS impact score 2.5 CVSS exploitability score 2.2 confidentialityImpact NONE integrityImpact LOW availabilityImpact LOW Details: Ease of Attack:

What To Look For

No information provided

Known Usage

No public information

False Positives

No known false positives

Contributors

Talos research team. This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology. For more information see [nvd].