--- title: "CVE-2007-3377\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-2007-3377?format=md keywords: index, follow --- # CVE-2007-3377 Publication date 25 June 2007 Last updated 17 July 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description Header.pm in Net::DNS before 0.60, a Perl module, (1) generates predictable sequence IDs with a fixed increment and (2) can use the same starting ID for all child processes of a forking server, which allows remote attackers to spoof DNS responses, as originally reported for qpsmtp and spamassassin. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | libnet-dns-perl | 7.10 gutsy | Not affected | | 7.04 feisty | Fixed 0.59-1build1.1 | | 6.10 edgy | Fixed 0.57-1ubuntu1 | | 6.06 LTS dapper | Fixed 0.53-2ubuntu1 | --- * [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-2007-3377) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2007-3377) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2007-3377) * [Debian](https://security-tracker.debian.org/tracker/CVE-2007-3377) ### Related Ubuntu Security Notices (USN) + [USN-483-1](https://usn.ubuntu.com/USN-483-1) + libnet-dns-perl vulnerabilities + 13 July 2007 ### Other references *