Bug 1933364 (CVE-2021-21330)

Summary:	CVE-2021-21330 python-aiohttp: Open redirect in aiohttp.web_middlewares.normalize_path_middleware
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	athmanem, bbuckingham, bcoca, bcourt, bkearney, btotty, chousekn, cmeyers, davidn, gblomqui, gsuckevi, hhudgeon, igor.raits, jcammara, jhardy, jobarker, kaycoth, lzap, mabashia, mail, mmccune, nmoumoul, osapryki, pcreech, python-sig, rchan, relrod, rhel8-maint, rjerrido, sdoran, smcdonal, sokeeffe, tkuratom
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	python-aiohttp 3.7.4	Doc Type:	If docs needed, set a value
Doc Text:	An open redirect flaw was found in python-aiohttp. This flaw allows a remote, unauthenticated attacker to trick users into visiting a malicious webpage, disguised as a legitimate webpage and affects applications using the normalize_path_middleware functionality. The highest threat from this vulnerability is to confidentiality and integrity.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-02 23:10:08 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1933365, 1933366, 1934072, 1934290
Bug Blocks:	1933367

Description Pedro Sampaio 2021-02-26 19:54:04 UTC

A flaw was found in python-aiohttp. A maliciously crafted link to an aiohttp-based web-server could redirect the browser to a different website. It is caused by a bug in the aiohttp.web_middlewares.normalize_path_middleware middleware.

References:

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjg

Comment 1 Pedro Sampaio 2021-02-26 19:54:42 UTC

Created python-aiohttp tracking bugs for this issue:

Affects: epel-8 [bug 1933366]
Affects: fedora-all [bug 1933365]

Comment 4 Yadnyawalk Tale 2021-03-02 12:48:17 UTC

External References:

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjg

Comment 7 Todd Cullum 2021-03-02 21:01:25 UTC

Upstream patch: https://github.com/aio-libs/aiohttp/commit/021c416c18392a111225bc7326063dc4a99a5138

Comment 8 RaTasha Tillery-Smith 2021-03-03 13:18:40 UTC

Statement:

Red Hat Satellite version 6.7 onward (mostly pulp part) does ship an affected version of aiohttp, however, is not vulnerable since the product code does not use the normalize_path_middleware function, which the attacker may use for an attack. We may update the python-aiohttp dependency in a future release.

Comment 9 Tapas Jena 2021-03-29 10:38:13 UTC

As part of analysis, I found that though Ansible use Python-Aiohttp, it doesn't use the vulnerable component i.e. aiohttp.web_middlewares.normalize_path_middleware. Hence, marking Ansible Automation Platform as "Not Affected".

Comment 13 errata-xmlrpc 2021-11-16 14:08:00 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 6.10 for RHEL 7

Via RHSA-2021:4702 https://access.redhat.com/errata/RHSA-2021:4702