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Allocation of Resources Without Limits or Throttling Affecting nginx package, versions <1.10.3-1+deb9u3

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.66% (80th percentile)
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NVD
6.5 medium
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SUSE
7.5 high
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Red Hat
6.5 medium

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  • Snyk ID SNYK-DEBIAN9-NGINX-459560
  • published 13 Aug 2019
  • disclosed 13 Aug 2019
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Introduced: 13 Aug 2019

CVE-2019-9516 Open this link in a new tab
CWE-770 Open this link in a new tab

How to fix?

Upgrade Debian:9 nginx to version 1.10.3-1+deb9u3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx package and not the nginx package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.

References