CVE-2017-5972

14.02.2017, 06:59

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.

Severity

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Atk. Vector

NETWORK

Atk. Complexity

LOW

Priv. Required

NONE

Base Score

CVSS 3.x

EPSS Score

Percentile: 92%

Vendor	Product	Version
linux	linux_kernel	3.0.0 ≤ 𝑥 ≤ 3.19.8

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

linux

bullseye	5.10.223-1 fixed
jessie	ignored
wheezy	no-dsa
bullseye (security)	5.10.226-1 fixed
bookworm	6.1.106-3 fixed
bookworm (security)	6.1.112-1 fixed
sid	6.11.5-1 fixed
trixie	6.11.5-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

linux

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	not-affected
zesty	not-affected
yakkety	not-affected
xenial	not-affected
trusty	ignored
precise	ignored

linux-armadaxp

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-aws

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	dne
zesty	dne
yakkety	dne
xenial	not-affected
trusty	not-affected
precise	dne

linux-aws-hwe

disco	dne
cosmic	dne
bionic	dne
xenial	not-affected
trusty	dne

linux-azure

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	dne
zesty	dne
yakkety	dne
xenial	not-affected
trusty	not-affected

linux-azure-edge

disco	dne
cosmic	dne
bionic	not-affected
xenial	not-affected
trusty	dne

linux-euclid

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
xenial	not-affected
trusty	dne

linux-flo

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	ignored
xenial	ignored
trusty	dne
precise	dne

linux-gcp

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	dne
zesty	dne
yakkety	dne
xenial	not-affected
trusty	dne

linux-gcp-edge

disco	dne
cosmic	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-gke

disco	dne
cosmic	dne
bionic	not-affected
artful	dne
zesty	dne
yakkety	dne
xenial	not-affected
trusty	dne
precise	dne

linux-goldfish

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	ignored
yakkety	ignored
xenial	ignored
trusty	dne
precise	dne

linux-grouper

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	dne

linux-hwe

disco	dne
cosmic	dne
bionic	not-affected
artful	dne
zesty	dne
yakkety	dne
xenial	not-affected
trusty	dne
precise	dne

linux-hwe-edge

disco	dne
cosmic	dne
bionic	not-affected
artful	dne
zesty	dne
yakkety	dne
xenial	not-affected
trusty	dne
precise	dne

linux-kvm

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	dne
zesty	dne
xenial	not-affected
trusty	dne

linux-linaro-omap

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-linaro-shared

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-linaro-vexpress

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-lts-quantal

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-lts-raring

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-lts-saucy

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-lts-trusty

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-lts-utopic

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	ignored
precise	dne

linux-lts-vivid

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	ignored
precise	dne

linux-lts-wily

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	ignored
precise	dne

linux-lts-xenial

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	not-affected
precise	dne

linux-maguro

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	dne

linux-mako

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	ignored
xenial	ignored
trusty	dne
precise	dne

linux-manta

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	dne

linux-oem

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	dne
zesty	dne
xenial	not-affected
trusty	dne

linux-oracle

disco	not-affected
cosmic	not-affected
bionic	not-affected
xenial	not-affected
trusty	dne

linux-qcm-msm

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

linux-raspi2

disco	not-affected
cosmic	not-affected
bionic	not-affected
artful	not-affected
zesty	not-affected
yakkety	not-affected
xenial	not-affected
trusty	dne
precise	dne

linux-snapdragon

disco	not-affected
cosmic	dne
bionic	not-affected
artful	not-affected
zesty	not-affected
yakkety	not-affected
xenial	not-affected
trusty	dne
precise	dne

linux-ti-omap4

disco	dne
cosmic	dne
bionic	dne
artful	dne
zesty	dne
yakkety	dne
xenial	dne
trusty	dne
precise	ignored

Known Exploits!

Common Weakness Enumeration

CWE-400 - Uncontrolled Resource Consumption
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References

http://seclists.org/oss-sec/2017/q1/573

http://www.securityfocus.com/bid/96231

https://access.redhat.com/security/cve/cve-2017-5972

https://bugzilla.redhat.com/show_bug.cgi?id=1422081

https://cxsecurity.com/issue/WLB-2017020112

https://githubengineering.com/syn-flood-mitigation-with-synsanity/

https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html

https://security-tracker.debian.org/tracker/CVE-2017-5972

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