Allocation of Resources Without Limits or Throttling Affecting nginx-debuginfo package, versions <1:1.16.1-1.37.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1.99% (89th percentile)

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  • Snyk IDSNYK-AMZN201803-NGINXDEBUGINFO-1719648
  • published27 Sept 2021
  • disclosed13 Aug 2019

Introduced: 13 Aug 2019

CVE-2019-9516  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 nginx-debuginfo to version 1:1.16.1-1.37.amzn1 or higher.
This issue was patched in ALAS-2019-1299.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx-debuginfo package and not the nginx-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 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

CVSS Base Scores

version 3.1