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Home / CVE DB / CVE-2018-16844
Standard
Vulnerability Identifier

CVE-2018-16844

2018-11-07
Severity Assessment
7.5
HIGH
CVSS v3.x Score
Clinical Analysis (Description)

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.

Vector Sequencing

Attack Parameters

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

Technical Impact

Unchanged
Scope
None
Confidentiality
None
Integrity
High
Availability
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2 Score (Legacy)
7.8

For backward compatibility

EPSS Probability
10.88%

Percentile: 93.4%

Weakness Classification

CWE-CWE-400

View CWE Details ↗
Affected Population

Affected Configurations

Total: 88 detected entries

Software List Scrollable
ap
xcode
Vendor: apple • v6.1.1
ap
xcode
Vendor: apple • v7.1
ca
ubuntu_linux
Vendor: canonical • v14.04
ap
xcode
Vendor: apple • v7.3
ap
xcode
Vendor: apple • v4.0
ap
xcode
Vendor: apple • v4.0.1
ap
xcode
Vendor: apple • v3.1.1
ap
xcode
Vendor: apple • v1.5.0
ap
xcode
Vendor: apple • v4.6
ap
xcode
Vendor: apple • v7.2
ap
xcode
Vendor: apple • v4.2
ap
xcode
Vendor: apple • v8.0
ap
xcode
Vendor: apple • v4.3.3
ap
xcode
Vendor: apple • v7.1.1
ap
xcode
Vendor: apple • v5.1
ap
xcode
Vendor: apple • v11.0
ap
xcode
Vendor: apple • v4.6.3
ap
xcode
Vendor: apple • v2.3.0
ca
ubuntu_linux
Vendor: canonical • v16.04
ap
xcode
Vendor: apple • v6.1
ca
ubuntu_linux
Vendor: canonical • v18.04
ap
xcode
Vendor: apple • v4.3.2
ap
xcode
Vendor: apple • v11.2
ap
xcode
Vendor: apple • v6.3.1
ap
xcode
Vendor: apple • v2.0.0
ap
xcode
Vendor: apple • v2.4.0
ap
xcode
Vendor: apple • v9.0
ap
xcode
Vendor: apple • v9.3.1
ap
xcode
Vendor: apple • v6.3
ap
xcode
Vendor: apple • v3.2.2
ap
xcode
Vendor: apple • v2.1.0
ap
xcode
Vendor: apple • v3.2.1
ap
xcode
Vendor: apple • v3.2.4
ap
xcode
Vendor: apple • v4.3.1
ap
xcode
Vendor: apple • v7.0
ap
xcode
Vendor: apple • v7.3.1
ap
xcode
Vendor: apple • v8.3.1
ap
xcode
Vendor: apple • v3.2.3
ap
xcode
Vendor: apple • v5.0.1
ap
xcode
Vendor: apple • v5.0.2
ap
xcode
Vendor: apple • v3.1.3
ap
xcode
Vendor: apple • v7.0.1
ap
xcode
Vendor: apple • v6.0
ap
xcode
Vendor: apple • v10
ap
xcode
Vendor: apple • v5.1.1
ap
xcode
Vendor: apple • v9.0.1
ap
xcode
Vendor: apple • v4.6.2
ap
xcode
Vendor: apple • v11.3
ap
xcode
Vendor: apple • v4.6.1
ap
xcode
Vendor: apple • v8.2
ap
xcode
Vendor: apple • v6.3.2
ap
xcode
Vendor: apple • v12.5
ap
xcode
Vendor: apple • v3.1.2
ap
xcode
Vendor: apple • v12.0
ap
xcode
Vendor: apple • v9.3
ap
xcode
Vendor: apple • v4.2.1
ap
xcode
Vendor: apple • v4.4.1
ap
xcode
Vendor: apple • v4.3
ap
xcode
Vendor: apple • v12.5.1
ap
xcode
Vendor: apple • v4.5.2
ap
xcode
Vendor: apple • v4.5
ap
xcode
Vendor: apple • v3.1
ap
xcode
Vendor: apple • v4.1.1
ap
xcode
Vendor: apple • v6.2
ap
xcode
Vendor: apple • v2.2.0
ap
xcode
Vendor: apple • v4.5.1
ap
xcode
Vendor: apple • v9.4
ap
xcode
Vendor: apple • v4.4
ap
xcode
Vendor: apple • v9.4.1
ap
xcode
Vendor: apple • v8.3.3
ap
xcode
Vendor: apple • v2.4.1
de
debian_linux
Vendor: debian • v9.0
ap
xcode
Vendor: apple • v7.2.1
ap
xcode
Vendor: apple • v8.3
ap
xcode
Vendor: apple • v9.2
ap
xcode
Vendor: apple • v3.2.5
ca
ubuntu_linux
Vendor: canonical • v18.10
ap
xcode
Vendor: apple • v4.1
ap
xcode
Vendor: apple • v5.0
ap
xcode
Vendor: apple • v9.1
ap
xcode
Vendor: apple • v6.4
ap
xcode
Vendor: apple • v8.1
ap
xcode
Vendor: apple • v8.2.1
ap
xcode
Vendor: apple • v8.3.2
ap
xcode
Vendor: apple • v6.0.1
ap
xcode
Vendor: apple • v4.0.2
ap
xcode
Vendor: apple • v3.1.4
ap
xcode
Vendor: apple • v12.4
Timeline

Time Line

PUBLICATION
07 Nov 2018
MODIFICATION
21 Nov 2024
Impact Statistics

Key Metrics

CVSS Score
7.5
HIGH
Products
88
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.

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