Bug 1966728 (CVE-2021-33193) - CVE-2021-33193 httpd: Request splitting via HTTP/2 method injection and mod_proxy
Summary: CVE-2021-33193 httpd: Request splitting via HTTP/2 method injection and mod_p...
Alias: CVE-2021-33193
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1996513 1972491 1972492 1996514
Blocks: 1966744
TreeView+ depends on / blocked
Reported: 2021-06-01 18:28 UTC by Pedro Sampaio
Modified: 2022-05-17 09:40 UTC (History)
52 users (show)

Fixed In Version: httpd 2.4.49
Doc Type: If docs needed, set a value
Doc Text:
A NULL pointer dereference was found in Apache httpd mod_h2. The highest threat from this flaw is to system integrity.
Clone Of:
Last Closed: 2022-05-11 23:45:22 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:1915 0 None None None 2022-05-10 14:17:32 UTC

Description Pedro Sampaio 2021-06-01 18:28:05 UTC
Request splitting via HTTP/2 method injection and mod_proxy in Apache httpd before 2.4.47.

Upstream patch:


Comment 7 Huzaifa S. Sidhpurwala 2021-08-23 04:24:55 UTC
Created httpd tracking bugs for this issue:

Affects: fedora-all [bug 1996514]

Comment 15 Iqbal Singh Aulakh 2022-03-02 01:55:54 UTC
When the fix will be available for this vulnerability on RHEL8?

Comment 16 errata-xmlrpc 2022-05-10 14:17:29 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1915 https://access.redhat.com/errata/RHSA-2022:1915

Comment 17 Product Security DevOps Team 2022-05-11 23:45:17 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


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