--- title: "CVE-2008-4100\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-2008-4100?format=md keywords: index, follow --- # CVE-2008-4100 Publication date 18 September 2008 Last updated 4 August 2025 --- Ubuntu priority **Negligible** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description GNU adns 1.4 and earlier uses a fixed source port and sequential transaction IDs for DNS requests, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447. NOTE: the vendor reports that this is intended behavior and is compatible with the product's intended role in a trusted environment. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | adns | 11.04 natty | Not affected | | 10.10 maverick | Not affected | | 10.04 LTS lucid | Not affected | | 9.10 karmic | Not affected | | 9.04 jaunty | Not affected | | 8.10 intrepid | Not affected | | 8.04 LTS hardy | Ignored end of life | | 7.10 gutsy | Ignored end of life, was needs-triage | | 7.04 feisty | Ignored end of life, was needs-triage | | 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-2008-4100) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2008-4100) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2008-4100) * [Debian](https://security-tracker.debian.org/tracker/CVE-2008-4100) ### Other references *