Virtuozzo 7 : tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc (VZLSA-2017-0935)

Medium Nessus Plugin ID 101450


The remote Virtuozzo host is missing a security update.


An update for tomcat is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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)

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc package.

See Also

Plugin Details

Severity: Medium

ID: 101450

File Name: Virtuozzo_VZLSA-2017-0935.nasl

Version: $Revision: 1.3 $

Type: local

Published: 2017/07/13

Modified: 2017/08/16

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

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

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/04/13

Reference Information

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

OSVDB: 147619, 148477