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Home / CVE DB / CVE-2017-18017
Standard
Vulnerability Identifier

CVE-2017-18017

2018-01-03
Severity Assessment
9.8
CRITICAL
CVSS v3.x Score
Clinical Analysis (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.

Vector Sequencing

Attack Parameters

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Impact Consequences

Technical Impact

Unchanged
Scope
High
Confidentiality
High
Integrity
High
Availability
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2 Score (Legacy)
10.0

For backward compatibility

EPSS Probability
34.31%

Percentile: 97.0%

Weakness Classification

CWE-CWE-416

View CWE Details ↗
Affected Population

Affected Configurations

Total: 43 detected entries

Software List Scrollable
ca
ubuntu_linux
Vendor: canonical • v14.04
re
enterprise_linux_workstation
Vendor: redhat • v7.0
re
enterprise_linux_server_tus
Vendor: redhat • v7.4
de
debian_linux
Vendor: debian • v8.0
re
enterprise_linux_server_aus
Vendor: redhat • v7.4
de
debian_linux
Vendor: debian • v7.0
su
linux_enterprise_debuginfo
Vendor: suse • v11
su
linux_enterprise_real_time_extension
Vendor: suse • v11
re
enterprise_linux_server
Vendor: redhat • v6.0
re
enterprise_linux_server_tus
Vendor: redhat • v7.6
re
enterprise_linux_eus
Vendor: redhat • v7.6
re
enterprise_linux_eus
Vendor: redhat • v7.7
su
linux_enterprise_module_for_public_cloud
Vendor: suse • v12
re
enterprise_linux_for_real_time
Vendor: redhat • v7
su
linux_enterprise_high_availability_extension
Vendor: suse • v11
re
enterprise_linux_server
Vendor: redhat • v7.0
ca
ubuntu_linux
Vendor: canonical • v12.04
re
enterprise_linux_eus
Vendor: redhat • v7.3
re
enterprise_linux_for_real_time_for_nfv
Vendor: redhat • v7
ar
eos
Vendor: arista • v4.20.1fx-virtual-router
su
linux_enterprise_server
Vendor: suse • v12
su
linux_enterprise_live_patching
Vendor: suse • v12
op
cloud_magnum_orchestration
Vendor: openstack • v7
su
linux_enterprise_real_time_extension
Vendor: suse • v12
su
linux_enterprise_high_availability
Vendor: suse • v12
su
linux_enterprise_server
Vendor: suse • v11
re
enterprise_linux_eus
Vendor: redhat • v7.4
re
enterprise_linux_server_aus
Vendor: redhat • v7.6
re
enterprise_linux_server_aus
Vendor: redhat • v7.3
su
linux_enterprise_point_of_sale
Vendor: suse • v11
re
enterprise_linux_desktop
Vendor: redhat • v7.0
re
enterprise_linux_server_aus
Vendor: redhat • v7.7
su
linux_enterprise_desktop
Vendor: suse • v12
op
leap
Vendor: opensuse • v42.3
su
linux_enterprise_workstation_extension
Vendor: suse • v12
re
enterprise_linux_desktop
Vendor: redhat • v6.0
su
linux_enterprise_software_development_kit
Vendor: suse • v11
re
enterprise_linux_server_tus
Vendor: redhat • v7.3
su
linux_enterprise_software_development_kit
Vendor: suse • v12
re
enterprise_linux_server_tus
Vendor: redhat • v7.7
re
mrg_realtime
Vendor: redhat • v2.0
su
openstack_cloud
Vendor: suse • v6
re
enterprise_linux_workstation
Vendor: redhat • v6.0
Timeline

Time Line

PUBLICATION
03 Jan 2018
MODIFICATION
03 Jan 2025
Impact Statistics

Key Metrics

CVSS Score
9.8
CRITICAL
Products
43
Affected
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Patch Library
No direct patch listed in database.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.

⚠️ MAXIMUM PRIORITY - Immediate action required

Sources & Bibliography
NIST NVD MITRE CVE External Reference ↗ External Reference ↗ External Reference ↗ External Reference ↗ External Reference ↗