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Ubuntu Security Notice USN-1637-1

Ubuntu Security Notice USN-1637-1
Posted Nov 21, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1637-1 - It was discovered that the Apache Tomcat HTTP NIO connector incorrectly handled header data. A remote attacker could cause a denial of service by sending requests with a large amount of header data. It was discovered that Apache Tomcat incorrectly handled DIGEST authentication. A remote attacker could possibly use these flaws to perform a replay attack and bypass authentication. Various other issues were also addressed.

tags | advisory, remote, web, denial of service
systems | linux, ubuntu
advisories | CVE-2012-2733, CVE-2012-5887, CVE-2012-2733, CVE-2012-3439, CVE-2012-5885, CVE-2012-5886, CVE-2012-5887
MD5 | 1119cc2f60938e86be74803b468d8e20

Ubuntu Security Notice USN-1637-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1637-1
November 21, 2012

tomcat6 vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in Apache Tomcat.

Software Description:
- tomcat6: Servlet and JSP engine

Details:

It was discovered that the Apache Tomcat HTTP NIO connector incorrectly
handled header data. A remote attacker could cause a denial of service by
sending requests with a large amount of header data. (CVE-2012-2733)

It was discovered that Apache Tomcat incorrectly handled DIGEST
authentication. A remote attacker could possibly use these flaws to perform
a replay attack and bypass authentication. (CVE-2012-5885, CVE-2012-5886,
CVE-2012-5887)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
libtomcat6-java 6.0.35-1ubuntu3.1

Ubuntu 11.10:
libtomcat6-java 6.0.32-5ubuntu1.3

Ubuntu 10.04 LTS:
libtomcat6-java 6.0.24-2ubuntu1.11

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1637-1
CVE-2012-2733, CVE-2012-3439, CVE-2012-5885, CVE-2012-5886,
CVE-2012-5887

Package Information:
https://launchpad.net/ubuntu/+source/tomcat6/6.0.35-1ubuntu3.1
https://launchpad.net/ubuntu/+source/tomcat6/6.0.32-5ubuntu1.3
https://launchpad.net/ubuntu/+source/tomcat6/6.0.24-2ubuntu1.11

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