CVE-2016-6816

Impact:
Moderate
Public Date:
2016-11-22
IAVA:
2017-A-0027
CWE:
CWE-444
Bugzilla:
1397484: CVE-2016-6816 tomcat: HTTP Request smuggling vulnerability due to permitting invalid character in HTTP requests
It was discovered that the code that parsed the HTTP request line permitted invalid characters. 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 then their own.

Find out more about CVE-2016-6816 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Applying the fix provided to mitigate this issue may cause Tomcat to return 400 status after updating. For more information, refer to https://access.redhat.com/solutions/2891171

CVSS v2 metrics

Base Score 5.8
Base Metrics AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None

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

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (tomcat6) RHSA-2017:0527 2017-03-15
Red Hat JBoss Web Server 3.1 for RHEL 6 RHSA-2017:0455 2017-03-07
Red Hat JBoss Enterprise Application Platform 6 for RHEL 6 Server (jboss-ec2-eap) RHSA-2017:0250 2017-02-02
Red Hat JBoss Enterprise Application Platform 6 for RHEL 6 Server (jbossweb) RHSA-2017:0244 2017-02-02
Red Hat JBoss Enterprise Application Platform 6 for RHEL 5 Server (jbossweb) RHSA-2017:0246 2017-02-02
Red Hat JBoss Web Server 3.1 RHSA-2017:0457 2017-03-07
Red Hat JBoss Web Server 3.1 for RHEL 7 RHSA-2017:0456 2017-03-07
Red Hat JBoss Enterprise Application Platform 6.4 RHSA-2017:0247 2017-02-02
Red Hat Enterprise Linux 7 (tomcat) RHSA-2017:0935 2017-04-12
Red Hat JBoss Enterprise Application Platform 6.3 for RHEL 7 Server (jbossweb) RHSA-2017:0245 2017-02-02

Affected Packages State

Platform Package State
Red Hat Software Collections for Red Hat Enterprise Linux rh-java-common-tomcat Not affected
Red Hat JBoss Web Server 3.0 tomcat7 Fix deferred
Red Hat JBoss Web Server 3.0 tomcat8 Fix deferred
Red Hat JBoss Portal Platform 6 jbossweb Will not fix
Red Hat JBoss Operations Network 3 Core Server Will not fix
Red Hat JBoss Fuse 6 jbossweb Will not fix
Red Hat JBoss EWS 2 tomcat7 Will not fix
Red Hat JBoss EWS 2 tomcat6 Will not fix
Red Hat JBoss EAP 5 jbossweb Will not fix
Red Hat JBoss Data Virtualization 6 jbossweb Will not fix
Red Hat JBoss Data Grid 6 jbossweb Will not fix
Red Hat Enterprise Linux 5 tomcat5 Will not fix

External References

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