The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before 8.0.14-1+deb8u3 on Debian jessie and the tomcat6 and libtomcat6-java packages before 6.0.35-1ubuntu3.8 on Ubuntu 12.04 LTS, the tomcat7 and libtomcat7-java packages before 7.0.52-1ubuntu0.7 on Ubuntu 14.04 LTS, and tomcat8 and libtomcat8-java packages before 8.0.32-1ubuntu1.2 on Ubuntu 16.04 LTS allows local users with access to the tomcat account to gain root privileges via a symlink attack on the Catalina log file, as demonstrated by /var/log/tomcat7/catalina.out.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3081-2 advisory.

  - The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before     8.0.14-1+deb8u3 on Debian jessie and the tomcat6 and libtomcat6-java packages before 6.0.35-1ubuntu3.8 on     Ubuntu 12.04 LTS, the tomcat7 and libtomcat7-java packages before 7.0.52-1ubuntu0.7 on Ubuntu 14.04 LTS,     and tomcat8 and libtomcat8-java packages before 8.0.32-1ubuntu1.2 on Ubuntu 16.04 LTS allows local users     with access to the tomcat account to gain root privileges via a symlink attack on the Catalina log file,     as demonstrated by /var/log/tomcat7/catalina.out. (CVE-2016-1240)

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

The remote host is affected by the vulnerability described in GLSA-201705-09 (Apache Tomcat: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Tomcat. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker may be able to cause a Denial of Service condition,       obtain sensitive information, bypass protection mechanisms and       authentication restrictions.
    A local attacker, who is a tomcat&rsquo;s system user or belongs to       tomcat&rsquo;s group, could potentially escalate privileges.
  Workaround :

    There is no known workaround at this time.

An update is now available for Red Hat JBoss Web Server 3 for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector (mod_jk), JBoss HTTP Connector (mod_cluster), Hibernate, and the Tomcat Native library.

This release of Red Hat JBoss Web Server 3.1.0 serves as a replacement for Red Hat JBoss Web Server 3.0.3, and includes enhancements.

Security Fix(es) :

* It was reported that the Tomcat init script performed unsafe file handling, which could result in local privilege escalation.
(CVE-2016-1240)

* It was discovered that the Tomcat packages installed certain configuration files read by the Tomcat initialization script as writeable to the tomcat group. A member of the group or a malicious web application deployed on Tomcat could use this flaw to escalate their privileges. (CVE-2016-6325)

* The JmxRemoteLifecycleListener was not updated to take account of Oracle's fix for CVE-2016-3427. JMXRemoteLifecycleListener is only included in EWS 2.x and JWS 3.x source distributions. If you deploy a Tomcat instance built from source, using the EWS 2.x, or JWS 3.x distributions, an attacker could use this flaw to launch a remote code execution attack on your deployed instance. (CVE-2016-8735)

* A denial of service vulnerability was identified in Commons FileUpload that occurred when the length of the multipart boundary was just below the size of the buffer (4096 bytes) used to read the uploaded file if the boundary was the typical tens of bytes long.
(CVE-2016-3092)

* 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)

* 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)

* The Realm implementations did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder. (CVE-2016-0762)

* It was discovered that a malicious web application could bypass a configured SecurityManager via a Tomcat utility method that was accessible to web applications. (CVE-2016-5018)

* It was discovered that when a SecurityManager is configured Tomcat's system property replacement feature for configuration files could be used by a malicious web application to bypass the SecurityManager and read system properties that should not be visible. (CVE-2016-6794)

* It was discovered that a malicious web application could bypass a configured SecurityManager via manipulation of the configuration parameters for the JSP Servlet. (CVE-2016-6796)

* It was discovered that it was possible for a web application to access any global JNDI resource whether an explicit ResourceLink had been configured or not. (CVE-2016-6797)

The CVE-2016-6325 issue was discovered by Red Hat Product Security.

Enhancement(s) :

* This enhancement update adds the Red Hat JBoss Web Server 3.1.0 packages to Red Hat Enterprise Linux 7. These packages provide a number of enhancements over the previous version of Red Hat JBoss Web Server. (JIRA#JWS-268)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:0455 advisory.

  - tomcat: timing attack in Realm implementation (CVE-2016-0762)

  - tomcat: unsafe chown of catalina.log in tomcat init script allows privilege escalation (CVE-2016-1240)

  - tomcat: Usage of vulnerable FileUpload package can result in denial of service (CVE-2016-3092)

  - tomcat: security manager bypass via IntrospectHelper utility function (CVE-2016-5018)

  - tomcat: tomcat writable config files allow privilege escalation (CVE-2016-6325)

  - tomcat: system property disclosure (CVE-2016-6794)

  - tomcat: security manager bypass via JSP Servlet config parameters (CVE-2016-6796)

  - tomcat: unrestricted access to global resources (CVE-2016-6797)

  - tomcat: HTTP Request smuggling vulnerability due to permitting invalid character in HTTP requests     (CVE-2016-6816)

  - tomcat: Remote code execution vulnerability in JmxRemoteLifecycleListener (CVE-2016-8735)

  - tomcat: information disclosure due to incorrect Processor sharing (CVE-2016-8745)

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

Dawid Golunski discovered that the Tomcat init script incorrectly handled creating log files. A remote attacker could possibly use this issue to obtain root privileges. (CVE-2016-1240)

This update also reverts a change in behaviour introduced in USN-3024-1 by setting mapperContextRootRedirectEnabled to True by default.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Dawid Golunski of LegalHackers discovered that the Tomcat init script performed unsafe file handling, which could result in local privilege escalation.

Dawid Golunski from legalhackers.com discovered that Debian's version of Tomcat 7 was vulnerable to a local privilege escalation. Local attackers who have gained access to the server in the context of the tomcat7 user through a vulnerability in a web application were able to replace the file with a symlink to an arbitrary file.

The full advisory can be found at

http://legalhackers.com/advisories/Tomcat-Debian-based-Root-Privilege- Escalation-Exploit.txt

In addition this security update also fixes Debian bug #821391. File ownership in /etc/tomcat7 will no longer be unconditionally overridden on upgrade. As another precaution the file permissions of Debian specific configuration files in /etc/tomcat7 were changed to 640 to disallow world readable access.

For Debian 7 'Wheezy', these problems have been fixed in version 7.0.28-4+deb7u6.

We recommend that you upgrade your tomcat7 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Dawid Golunski from legalhackers.com discovered that Debian's version of Tomcat 6 was vulnerable to a local privilege escalation. Local attackers who have gained access to the server in the context of the tomcat6 user through a vulnerability in a web application were able to replace the file with a symlink to an arbitrary file.

The full advisory can be found at

http://legalhackers.com/advisories/Tomcat-Debian-based-Root-Privilege- Es calation-Exploit.txt

For Debian 7 'Wheezy', these problems have been fixed in version 6.0.45+dfsg-1~deb7u2.

We recommend that you upgrade your tomcat6 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
142021	Ubuntu 16.04 LTS : Tomcat vulnerability (USN-3081-2)	Nessus	Ubuntu Local Security Checks	high
100262	GLSA-201705-09 : Apache Tomcat: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
97596	RHEL 7 : Red Hat JBoss Web Server 3.1.0 (RHSA-2017:0456)	Nessus	Red Hat Local Security Checks	critical
97595	RHEL 6 : Red Hat JBoss Web Server 3.1.0 (RHSA-2017:0455)	Nessus	Red Hat Local Security Checks	critical
93600	Ubuntu 14.04 LTS / 16.04 LTS : Tomcat vulnerability (USN-3081-1)	Nessus	Ubuntu Local Security Checks	high
93549	Debian DSA-3670-1 : tomcat8 - security update	Nessus	Debian Local Security Checks	high
93548	Debian DSA-3669-1 : tomcat7 - security update	Nessus	Debian Local Security Checks	high
93545	Debian DLA-623-1 : tomcat7 security update	Nessus	Debian Local Security Checks	high
93544	Debian DLA-622-1 : tomcat6 security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2016-1240

high

Tenable Plugins

high

critical

critical

critical

high

high

high

high

high