--- title: "CVE-2009-0654\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-2009-0654?format=md keywords: index, follow --- # CVE-2009-0654 Publication date 20 February 2009 Last updated 24 July 2024 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description Tor 0.2.0.28, and probably 0.2.0.34 and earlier, allows remote attackers, with control of an entry router and an exit router, to confirm that a sender and receiver are communicating via vectors involving (1) replaying, (2) modifying, (3) inserting, or (4) deleting a single cell, and then observing cell recognition errors at the exit router. NOTE: the vendor disputes the significance of this issue, noting that the product's design "accepted end-to-end correlation as an attack that is too expensive to solve." ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | tor | 11.10 oneiric | Not affected | | 11.04 natty | Not affected | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 9.10 karmic | Not in release | | 9.04 jaunty | Not in release | | 8.10 intrepid | Ignored end of life, was needed | | 8.04 LTS hardy | Ignored end of life | | 7.10 gutsy | Ignored end of life, was needed | | 6.06 LTS dapper | Ignored end of life | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0654) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-0654) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-0654) * [Debian](https://security-tracker.debian.org/tracker/CVE-2009-0654) ### Other references *