vulnerability
Oracle Linux: CVE-2016-5696: ELSA-2016-3594: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:H/Au:N/C:N/I:P/A:P) | Jul 12, 2016 | Aug 17, 2016 | Jan 23, 2025 |
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.
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
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