CVE & CISA-KEV Catalog

CVE-2019-9516

MEDIUMEPSS 99th pctl
6.5
CVSS v3
NVD

Description

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.

CWE-400Resource ExhaustionCWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available
nginxDebian
Fixed in:1.14.2-3CVE-2019-9516
Fixed in:1.14.2-3CVE-2019-9516
Fixed in:1.14.2-3CVE-2019-9516
Fixed in:1.14.2-3CVE-2019-9516
nginxUbuntu
Fixed in:1.10.3-0ubuntu0.16.04.4USN-4099-1
Fixed in:1.14.0-0ubuntu1.4USN-4099-1
nginx-commonUbuntu
Fixed in:1.10.3-0ubuntu0.16.04.4USN-4099-1
Fixed in:1.14.0-0ubuntu1.4USN-4099-1
nginx-coreUbuntu
Fixed in:1.10.3-0ubuntu0.16.04.4USN-4099-1
Fixed in:1.14.0-0ubuntu1.4USN-4099-1
nginx-extrasUbuntu
Fixed in:1.10.3-0ubuntu0.16.04.4USN-4099-1
Fixed in:1.14.0-0ubuntu1.4USN-4099-1
nginx-fullUbuntu
Fixed in:1.10.3-0ubuntu0.16.04.4USN-4099-1
Fixed in:1.14.0-0ubuntu1.4USN-4099-1
nginx-lightUbuntu
Fixed in:1.10.3-0ubuntu0.16.04.4USN-4099-1
Fixed in:1.14.0-0ubuntu1.4USN-4099-1
Node.jsWindows application
Affected:12.0.0 12.8.1Fixed in:12.8.1Node.js Foundation
Affected:10.0.0 10.16.3Fixed in:10.16.3Node.js Foundation
Affected:8.0.0 8.16.1Fixed in:8.16.1Node.js Foundation
Node.js (LTS)Windows application
Affected:10.0.0 10.16.3Fixed in:10.16.3Node.js Foundation
Affected:12.0.0 12.8.1Fixed in:12.8.1Node.js Foundation
Affected:8.0.0 8.16.1Fixed in:8.16.1Node.js Foundation

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

56.26%probability of exploitation in 30 days
99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-44487High7.5100%KEVFix
CVE-2021-44228Critical10.0100%KEV + RansomFix
CVE-2011-3192High7.899%-Fix
CVE-2019-11478Medium5.395%-Fix
CVE-2024-25617Medium5.389%-Fix
CVE-2018-1000115High7.588%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-14.