Information disclosure in F5 Big-Ip Access Policy Manager
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 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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.740 (99.5th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.625 · newest: 0.740 · change: +0.115
Affected products
- F5 Big-Ip Access Policy Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Advanced Firewall Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Analytics — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Application Acceleration Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Application Security Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Global Traffic Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Link Controller — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Local Traffic Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Policy Enforcement Manager — versions 11.4.0, 11.4.1, 11.5.0
- F5 Big-Ip Protocol Security Module — versions 11.4.0, 11.4.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.f5.com/csp/article/K05121675 (Mitigation, Vendor Advisory)
- www.exploit-db.com/exploits/41298/ (exploit)
- filippo.io/Ticketbleed/
- www.securityfocus.com/bid/96143 (vdb-entry)
- blog.filippo.io/finding-ticketbleed/
- www.securitytracker.com/id/1037800 (VDB Entry, Third Party Advisory, vdb-entry)
- packetstormsecurity.com/files/141017/Ticketbleed-F5-TLS-Information-Disclosure…
- github.com/0x00string/oldays/blob/master/CVE-2016-9244.py
Frequently asked questions
- What is CVE-2016-9244?
- CVE-2016-9244 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Information Disclosure. CVSS score: 7.5/10. Published 2017-02-09.
- How severe is CVE-2016-9244?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-9244 known to be exploited?
- 28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.