vulnerability

Oracle Linux: CVE-2016-5696: ELSA-2016-3594: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:H/Au:N/C:N/I:P/A:P)
Published
Jul 12, 2016
Added
Aug 17, 2016
Modified
Jan 23, 2025

Description

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.
It was found that the RFC 5961 challenge ACK rate limiting as implemented in the Linux kernel's networking subsystem allowed an off-path attacker to leak certain information about a given connection by creating congestion on the global challenge ACK rate limit counter and then measuring the changes by probing packets. An off-path attacker could use this flaw to either terminate TCP connection and/or inject payload into non-secured TCP connection between two endpoints on the network.

Solution(s)

oracle-linux-upgrade-kerneloracle-linux-upgrade-kernel-uek
Title
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