RHEL 7 : tomcat (RHSA-2017:0935)

high Nessus Plugin ID 99348

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Synopsis

The remote Red Hat host is missing one or more security updates for tomcat.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:0935 advisory.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

* 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. (CVE-2016-6816)

Note: This fix causes Tomcat to respond with an HTTP 400 Bad Request error when request contains characters that are not permitted by the HTTP specification to appear not encoded, even though they were previously accepted. The newly introduced system property tomcat.util.http.parser.HttpParser.requestTargetAllow can be used to configure Tomcat to accept curly braces ({ and }) and the pipe symbol (|) in not encoded form, as these are often used in URLs without being properly encoded.

* A bug was discovered in the error handling of the send file code for the NIO HTTP connector. This led to the current Processor object being added to the Processor cache multiple times allowing information leakage between requests including, and not limited to, session ID and the response body. (CVE-2016-8745)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL tomcat package based on the guidance in RHSA-2017:0935.

Plugin Details

Severity: High

ID: 99348

File Name: redhat-RHSA-2017-0935.nasl

Version: 3.13

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 4/13/2017

Updated: 11/4/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2016-6816

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2016-8745

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:tomcat, p-cpe:/a:redhat:enterprise_linux:tomcat-lib, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-2.2-api, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:tomcat-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat-javadoc, p-cpe:/a:redhat:enterprise_linux:tomcat-jsvc, p-cpe:/a:redhat:enterprise_linux:tomcat-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat-el-2.2-api, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-3.0-api

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/12/2017

Vulnerability Publication Date: 3/20/2017

Reference Information

CVE: CVE-2016-6816, CVE-2016-8745

CWE: 444

RHSA: 2017:0935

Detections

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