CVE-2017-7559

Related Vulnerabilities: CVE-2017-7559  

It was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.

It was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.

Find out more about CVE-2017-7559 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Impact Low
Availability Impact None

Red Hat Security Errata

Platform Errata Release Date
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server (eap7-jboss-ec2-eap) RHSA-2017:3458 2017-12-13
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server (eap7-jboss-ec2-eap) RHSA-2018:0005 2018-01-03
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server (eap7-jboss-ec2-eap) RHSA-2017:3458 2017-12-13
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server RHSA-2018:0002 2018-01-03
Red Hat JBoss EAP 7 RHSA-2018:0003 2018-01-03
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server RHSA-2017:3454 2017-12-13
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server RHSA-2017:3455 2017-12-13
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server RHSA-2018:0004 2018-01-03
Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server (eap7-jboss-ec2-eap) RHSA-2018:0005 2018-01-03
Red Hat JBoss Fuse 6.3 RHSA-2018:1322 2018-05-03
Red Hat JBoss EAP 7 RHSA-2017:3456 2017-12-13
Red Hat JBoss A-MQ 6.3 RHSA-2018:1322 2018-05-03

Affected Packages State

Platform Package State
Red Hat Single Sign-On 7 wildfly-undertow Will not fix

Acknowledgements

This issue was discovered by Stuart Douglas (Red Hat).