The postrm script in the tomcat6 package before 6.0.45+dfsg-1~deb7u3 on Debian wheezy, before 6.0.45+dfsg-1~deb8u1 on Debian jessie, before 6.0.35-1ubuntu3.9 on Ubuntu 12.04 LTS and on Ubuntu 14.04 LTS; the tomcat7 package before 7.0.28-4+deb7u7 on Debian wheezy, before 7.0.56-3+deb8u6 on Debian jessie, before 7.0.52-1ubuntu0.8 on Ubuntu 14.04 LTS, and on Ubuntu 12.04 LTS, 16.04 LTS, and 16.10; and the tomcat8 package before 8.0.14-1+deb8u5 on Debian jessie, before 8.0.32-1ubuntu1.3 on Ubuntu 16.04 LTS, before 8.0.37-1ubuntu0.1 on Ubuntu 16.10, and before 8.0.38-2ubuntu1 on Ubuntu 17.04 might allow local users with access to the tomcat account to gain root privileges via a setgid program in the Catalina directory, as demonstrated by /etc/tomcat8/Catalina/attack.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3177-1 advisory.

    It was discovered that the Tomcat realm implementations incorrectly handled passwords when a username     didn't exist. A remote attacker could possibly use this issue to enumerate usernames. This issue only     applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-0762)

    Alvaro Munoz and Alexander Mirosh discovered that Tomcat incorrectly limited use of a certain utility     method. A malicious application could possibly use this to bypass Security Manager restrictions. This     issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5018)

    It was discovered that Tomcat did not protect applications from untrusted data in the HTTP_PROXY     environment variable. A remote attacker could possibly use this issue to redirect outbound traffic to an     arbitrary proxy server. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04     LTS. (CVE-2016-5388)

    It was discovered that Tomcat incorrectly controlled reading system properties. A malicious application     could possibly use this to bypass Security Manager restrictions. This issue only applied to Ubuntu 12.04     LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6794)

    It was discovered that Tomcat incorrectly controlled certain configuration parameters. A malicious     application could possibly use this to bypass Security Manager restrictions. This issue only applied to     Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6796)

    It was discovered that Tomcat incorrectly limited access to global JNDI resources. A malicious application     could use this to access any global JNDI resource without an explicit ResourceLink. This issue only     applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6797)

    Regis Leroy discovered that Tomcat incorrectly filtered certain invalid characters from the HTTP request     line. A remote attacker could possibly use this issue to inject data into HTTP responses. (CVE-2016-6816)

    Pierre Ernst discovered that the Tomcat JmxRemoteLifecycleListener did not implement a recommended fix. A     remote attacker could possibly use this issue to execute arbitrary code. (CVE-2016-8735)

    It was discovered that Tomcat incorrectly handled error handling in the send file code. A remote attacker     could possibly use this issue to access information from other requests. (CVE-2016-8745)

    Paul Szabo discovered that the Tomcat package incorrectly handled upgrades and removals. A local attacker     could possibly use this issue to obtain root privileges. (CVE-2016-9774, CVE-2016-9775)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Multiple security vulnerabilities were discovered in the Tomcat servlet and JSP engine, as well as in its Debian-specific maintainer scripts. Those flaws allowed for privilege escalation, information disclosure, and remote code execution.

As part of this update, several regressions stemming from incomplete fixes for previous vulnerabilities were also fixed.

ID	Name	Product	Family	Severity
96720	Ubuntu 14.04 LTS / 16.04 LTS : Tomcat vulnerabilities (USN-3177-1)	Nessus	Ubuntu Local Security Checks	critical
96018	Debian DSA-3739-1 : tomcat8 - security update	Nessus	Debian Local Security Checks	critical
96017	Debian DSA-3738-1 : tomcat7 - security update	Nessus	Debian Local Security Checks	critical

Detections

Analytics

CVE-2016-9775

high

Tenable Plugins

critical

critical

critical