Resource Exhaustion Affecting nginx-mod-http-xslt-filter package, versions <1:1.14.1-9.module+el8.0.0+4108+af250afe


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
9.62% (96th percentile)

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  • Snyk IDSNYK-CENTOS8-NGINXMODHTTPXSLTFILTER-1992631
  • published26 Jul 2021
  • disclosed13 Aug 2019

Introduced: 13 Aug 2019

CVE-2019-9511  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Centos:8 nginx-mod-http-xslt-filter to version 1:1.14.1-9.module+el8.0.0+4108+af250afe or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx-mod-http-xslt-filter package and not the nginx-mod-http-xslt-filter package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

References

CVSS Scores

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