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[NGINX:CVE-2019-9516] Excessive memory usage in HTTP/2 with zero length headers

Severity Low
Affected Packages 1
Unaffected Packages 2
CVEs 1
Info Packages Vulnerabilities

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.

Package Affected Version
pkg:nginx/nginx >= 1.9.5, <= 1.17.2
Package Unaffected Version
pkg:nginx/nginx >= 1.17.3
pkg:nginx/nginx >= 1.16.1
ID
NGINX:CVE-2019-9516
Severity
low
Published
2019-08-13T21:15:12
(5 years ago)
Modified
2019-08-13T21:15:12
(5 years ago)
Rights
NGINX Security Team
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:nginx/nginx nginx >= 1.9.5 <= 1.17.2
Unaffected pkg:nginx/nginx nginx >= 1.17.3
Unaffected pkg:nginx/nginx nginx >= 1.16.1
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date