ROS-2-792

2.792 Open redirect in aiohttp (CVE-2021-21330)

1. Vulnerability Description:

Vulnerability allows cross-site scripting and bypass of security restrictions.Identifier of the Information Security Threats Data Bank of the FSTEC of Russia: BDU:2021-01528

2. Possible measures to eliminate the vulnerability

It is necessary to prohibit the use of applications that use aiohttp. or - install security updates for the package: python3-aiohttp with dependenciesInstalling updates is possible in the following ways:**a) if the computer with the installed OS version has access to the official repository of the vendor, you need to run the update as administrator with the command:# yum updateAfter the list of updated packages is displayed, agree to apply updates by pressingY**on the keyboard. Wait until the updates installation is complete and make sure that there are no errors during their installation.b)If the computer with the installed OS version does not have access to the vendor’s official repository, you should perform the following actions: - download the updated package (and dependencies, if necessary): http://repo.red-soft.ru/redos/7.2c/x86_64/updates/python3-aiohttp-3.7.4-0.1.el7.x86_64.rpm http://repo.red-soft.ru/redos/7.2c/x86_64/updates/python3-async-timeout-3.0.1-0.1.el7.noarch.rpm http://repo.red-soft.ru/redos/7.2c/x86_64/updates/python3-multidict-4.5.2-0.1.el7.x86_64.rpm Check the integrity and authenticity of the package according to instructionsInstall the downloaded package with the command:# yum localinstall *.rpmWhen the list of updated packages is displayed, agree to apply the updates by pressingY on the keyboard. Wait until the installation of the updates is complete and make sure that there are no errors during their installation.

Date of last modification: 08.09.2021