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CVE-2017-18017

CRITICAL
9.8
CVSS Score
Published: January 3, 2018 at 06:00 AM UTC
Updated: June 17, 2026 at 01:12 AM UTC
29 products affected across 9 vendorsLinux KernelDebian LinuxUbuntu Linux

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Severity
CRITICAL9.8
Exploit prediction
EPSS 53%

Description

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Eos· Arista
95%
4.20.1fx-virtual-router
Ubuntu Linux· Canonicalrubygems
95%
12.0414.04
Debian Linux· Debiandrupal
95%
7.08.0
Arx· F5
95%
6.2.0 ≤ v ≤ 6.4.0
Linux Kernel· Linux
95%
3.11 ≤ v < 3.16.543.17 ≤ v < 3.18.603.19 ≤ v < 4.1.433.2 ≤ v < 3.2.993.3 ≤ v < 3.10.1084.10 ≤ v < 4.114.2 ≤ v < 4.4.764.5 ≤ v < 4.9.36
Affected range stops below 3.10.108, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.16.54, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.18.60, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.2.99, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.43, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.76, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.36, so it looks safe — our inference, not a vendor statement
Cloud Magnum Orchestration· Openstack
95%
7
Leap· openSUSEdrupal
95%
42.3
Enterprise Linux Desktop· Red Hatrubygems
95%
6.07.0
Enterprise Linux Eus· Red Hatrpm
95%
7.37.47.67.7
Enterprise Linux for Real Time· Red Hat
95%
7

References (33)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00008.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00013.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00015.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00038.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00047.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.html

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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