Ubuntu 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : tomcat6, tomcat7 vulnerabilities (USN-1685-1)
Medium Nessus Plugin ID 63535
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionIt was discovered that Tomcat incorrectly performed certain security constraint checks in the FORM authenticator. A remote attacker could possibly use this flaw with a specially crafted URI to bypass security constraint checks. This issue only affected Ubuntu 10.04 LTS, Ubuntu 11.10 and Ubuntu 12.04 LTS. (CVE-2012-3546)
It was discovered that Tomcat incorrectly handled requests that lack a session identifier. A remote attacker could possibly use this flaw to bypass the cross-site request forgery protection. (CVE-2012-4431)
It was discovered that Tomcat incorrectly handled sendfile and HTTPS when the NIO connector is used. A remote attacker could use this flaw to cause Tomcat to stop responsing, resulting in a denial of service.
This issue only affected Ubuntu 10.04 LTS, Ubuntu 11.10 and Ubuntu 12.04 LTS. (CVE-2012-4534).
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.
SolutionUpdate the affected libtomcat6-java and / or libtomcat7-java packages.