CVE-2017-18017

CRITICAL EPSS 98.8%

Published Jan 3, 20188y ago · Modified Jun 17, 20262w ago

9.8 CVSS 3.1

Critical

Published Jan 3, 2018 8y ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

9.8

Exploitability

3.9

Impact

5.9

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

98.8% percentile

Exploit & Patch Status

No Known Exploit

Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 66

Vendor	Product	Version	Range
linux	linux_kernel	*	≥3.2 – <3.2.99
linux	linux_kernel	*	≥3.3 – <3.10.108
linux	linux_kernel	*	≥3.11 – <3.16.54
linux	linux_kernel	*	≥3.17 – <3.18.60
linux	linux_kernel	*	≥3.19 – <4.1.43
linux	linux_kernel	*	≥4.2 – <4.4.76
linux	linux_kernel	*	≥4.5 – <4.9.36
linux	linux_kernel	*	≥4.10 – <4.11
debian	debian_linux	7.0	any
debian	debian_linux	8.0	any
arista	eos	4.20.1fx-virtual-router	any
f5	arx	*	≥6.2.0 – ≤6.4.0
suse	caas_platform	*	any
suse	linux_enterprise_debuginfo	11	any
suse	linux_enterprise_debuginfo	11	any
suse	linux_enterprise_module_for_public_cloud	12	any
suse	linux_enterprise_point_of_sale	11	any
suse	openstack_cloud	6	any
opensuse	leap	42.3	any
suse	linux_enterprise_desktop	12	any
suse	linux_enterprise_desktop	12	any
suse	linux_enterprise_high_availability	12	any
suse	linux_enterprise_high_availability	12	any
suse	linux_enterprise_high_availability_extension	11	any
suse	linux_enterprise_live_patching	12	any
suse	linux_enterprise_live_patching	12	any
suse	linux_enterprise_real_time_extension	11	any
suse	linux_enterprise_real_time_extension	12	any
suse	linux_enterprise_real_time_extension	12	any
suse	linux_enterprise_server	11	any
suse	linux_enterprise_server	11	any
suse	linux_enterprise_server	12	any
suse	linux_enterprise_server	12	any
suse	linux_enterprise_server	12	any
suse	linux_enterprise_server	12	any
suse	linux_enterprise_server	12	any
suse	linux_enterprise_server	12	any
suse	linux_enterprise_software_development_kit	11	any
suse	linux_enterprise_software_development_kit	12	any
suse	linux_enterprise_software_development_kit	12	any
suse	linux_enterprise_workstation_extension	12	any
suse	linux_enterprise_workstation_extension	12	any
openstack	cloud_magnum_orchestration	7	any
canonical	ubuntu_linux	12.04	any
canonical	ubuntu_linux	14.04	any
redhat	mrg_realtime	2.0	any
redhat	enterprise_linux_desktop	6.0	any
redhat	enterprise_linux_desktop	7.0	any
redhat	enterprise_linux_eus	7.3	any
redhat	enterprise_linux_eus	7.4	any
redhat	enterprise_linux_eus	7.6	any
redhat	enterprise_linux_eus	7.7	any
redhat	enterprise_linux_for_real_time	7	any
redhat	enterprise_linux_for_real_time_for_nfv	7	any
redhat	enterprise_linux_server	6.0	any
redhat	enterprise_linux_server	7.0	any
redhat	enterprise_linux_server_aus	7.3	any
redhat	enterprise_linux_server_aus	7.4	any
redhat	enterprise_linux_server_aus	7.6	any
redhat	enterprise_linux_server_aus	7.7	any
redhat	enterprise_linux_server_tus	7.3	any
redhat	enterprise_linux_server_tus	7.4	any
redhat	enterprise_linux_server_tus	7.6	any
redhat	enterprise_linux_server_tus	7.7	any
redhat	enterprise_linux_workstation	6.0	any
redhat	enterprise_linux_workstation	7.0	any

References 33

git.kernel.org http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901

PatchThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00008.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00013.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00015.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00038.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00047.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00070.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00072.html

Mailing ListThird Party Advisory
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2018-04/msg00014.html

Mailing ListThird Party Advisory
patchwork.ozlabs.org http://patchwork.ozlabs.org/patch/746618/

PatchThird Party Advisory
securityfocus.com http://www.securityfocus.com/bid/102367

Broken LinkThird Party AdvisoryVDB Entry
ubuntu.com http://www.ubuntu.com/usn/USN-3583-1

Third Party Advisory
ubuntu.com http://www.ubuntu.com/usn/USN-3583-2

Third Party Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2018:0676

Third Party Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2018:1062

Third Party Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2018:1130

Third Party Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2018:1170

Third Party Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2018:1319

Third Party Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2018:1737

Third Party Advisory
bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765

Issue TrackingThird Party Advisory
github.com https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901

PatchThird Party Advisory
help.ecostruxureit.com https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0

Third Party Advisory
lists.debian.org https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html

Mailing ListThird Party Advisory
lkml.org https://lkml.org/lkml/2017/4/2/13

Third Party Advisory
security.netapp.com https://security.netapp.com/advisory/ntap-20250103-0010/
support.f5.com https://support.f5.com/csp/article/K18352029

Third Party Advisory
usn.ubuntu.com https://usn.ubuntu.com/3583-1/

Third Party Advisory
usn.ubuntu.com https://usn.ubuntu.com/3583-2/

Third Party Advisory
arista.com https://www.arista.com/en/support/advisories-notices/security-advisories/4577-security-advisory-34

MitigationThird Party Advisory
debian.org https://www.debian.org/security/2018/dsa-4187

Third Party Advisory
kernel.org https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.36

Release NotesVendor Advisory

Remediation

git.kernel.org http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901

PatchThird Party Advisory
patchwork.ozlabs.org http://patchwork.ozlabs.org/patch/746618/

PatchThird Party Advisory
github.com https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901

PatchThird Party Advisory