--- title: "CVE-2011-2526\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2011-2526?format=md keywords: index, follow --- # CVE-2011-2526 Publication date 14 July 2011 Last updated 24 July 2024 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description Apache Tomcat 5.5.x before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.19, when sendfile is enabled for the HTTP APR or HTTP NIO connector, does not validate certain request attributes, which allows local users to bypass intended file access restrictions or cause a denial of service (infinite loop or JVM crash) by leveraging an untrusted web application. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | tomcat5.5 | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Ignored end of life | | tomcat6 | 11.10 oneiric | Fixed 6.0.32-5ubuntu1.1 | | 11.04 natty | Fixed 6.0.28-10ubuntu2.2 | | 10.10 maverick | Fixed 6.0.28-2ubuntu1.5 | | 10.04 LTS lucid | Fixed 6.0.24-2ubuntu1.9 | | 8.04 LTS hardy | Not in release | | tomcat7 | 11.10 oneiric | Not affected | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2011-2526?format=md#patch-details) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | tomcat5.5 | * Upstream: | | tomcat6 | * Upstream: | | tomcat7 | * Upstream: * Upstream: * Upstream: * Upstream: * Upstream: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2526) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-2526) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-2526) * [Debian](https://security-tracker.debian.org/tracker/CVE-2011-2526) ### Related Ubuntu Security Notices (USN) + [USN-1252-1](https://usn.ubuntu.com/USN-1252-1) + Tomcat vulnerabilities + 8 November 2011 ### Other references *