Recently modified vulnerabilities for "redhat single sign-on" 7.4

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redhat/rh-sso7-keycloakA flaw was found in keycloak. Internationalized domain name (IDN) homograph attacks may be used to i…

Risk 28

Severity

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra privileges.

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First published (updated )

CVE-2021-3424

redhat/rh-sso7-keycloakDoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, a…

Risk 44

Severity

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

A flaw was found in Keycloak. This flaw allows an attacker to perform a denial of service attack by sending multiple simultaneous requests with a Content-Length header value greater than the actual byte count of the request body. The highest threat from this vulnerability is to system availability.

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Remedy

- The possibility of this issue largely depends on the environment, specifically the load balancer or reverse proxies between the client and the server. The issue occurs when there is no load balancer in place. - Proper tuning of HTTP request timeout and keycloak database max pool size can mitigate this issue : bin/jboss-cli.sh --connect --commands='/subsystem=transactions:write-attribute(name=default-timeout,value=30),/subsystem=undertow/server=default-server/http-listener=default/:write-attribute(name=read-timeout,value=30000),/subsystem=undertow/server=default-server/https-listener=https/:write-attribute(name=read-timeout,value=30000),/subsystem=datasources/data-source=KeycloakDS/:write-attribute(name=max-pool-size,value=100),reload'

First published (updated )

CVE-2020-10758

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