CVE-2021-33193 Affecting mod24_ssl package, versions <1:2.4.51-1.94.amzn1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (49th percentile)

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  • Snyk IDSNYK-AMZN201803-MOD24SSL-1734960
  • published16 Oct 2021
  • disclosed16 Aug 2021

Introduced: 16 Aug 2021

CVE-2021-33193  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 mod24_ssl to version 1:2.4.51-1.94.amzn1 or higher.
This issue was patched in ALAS-2021-1543.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod24_ssl package and not the mod24_ssl package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.

References

CVSS Scores

version 3.1