Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 10 products from f5, from f5, from f5 and 7 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2017-02-09T15:59:01.300

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	f5	big-ip_local_traffic_manager	11.4.0	Yes
Application	f5	big-ip_local_traffic_manager	11.4.1	Yes
Application	f5	big-ip_local_traffic_manager	11.5.0	Yes
Application	f5	big-ip_local_traffic_manager	11.5.1	Yes
Application	f5	big-ip_local_traffic_manager	11.5.2	Yes
Application	f5	big-ip_local_traffic_manager	11.5.3	Yes
Application	f5	big-ip_local_traffic_manager	11.5.4	Yes
Application	f5	big-ip_local_traffic_manager	11.6.0	Yes
Application	f5	big-ip_local_traffic_manager	11.6.1	Yes
Application	f5	big-ip_local_traffic_manager	12.0.0	Yes
Application	f5	big-ip_local_traffic_manager	12.1.0	Yes
Application	f5	big-ip_local_traffic_manager	12.1.1	Yes
Application	f5	big-ip_local_traffic_manager	12.1.2	Yes
Application	f5	big-ip_application_acceleration_manager	11.4.0	Yes
Application	f5	big-ip_application_acceleration_manager	11.4.1	Yes
Application	f5	big-ip_application_acceleration_manager	11.5.0	Yes
Application	f5	big-ip_application_acceleration_manager	11.5.1	Yes
Application	f5	big-ip_application_acceleration_manager	11.5.2	Yes
Application	f5	big-ip_application_acceleration_manager	11.5.3	Yes
Application	f5	big-ip_application_acceleration_manager	11.5.4	Yes
Application	f5	big-ip_application_acceleration_manager	11.6.0	Yes
Application	f5	big-ip_application_acceleration_manager	11.6.1	Yes
Application	f5	big-ip_application_acceleration_manager	12.0.0	Yes
Application	f5	big-ip_application_acceleration_manager	12.1.0	Yes
Application	f5	big-ip_application_acceleration_manager	12.1.1	Yes
Application	f5	big-ip_application_acceleration_manager	12.1.2	Yes
Application	f5	big-ip_advanced_firewall_manager	11.4.0	Yes
Application	f5	big-ip_advanced_firewall_manager	11.4.1	Yes
Application	f5	big-ip_advanced_firewall_manager	11.5.0	Yes
Application	f5	big-ip_advanced_firewall_manager	11.5.1	Yes
Application	f5	big-ip_advanced_firewall_manager	11.5.2	Yes
Application	f5	big-ip_advanced_firewall_manager	11.5.3	Yes
Application	f5	big-ip_advanced_firewall_manager	11.5.4	Yes
Application	f5	big-ip_advanced_firewall_manager	11.6.0	Yes
Application	f5	big-ip_advanced_firewall_manager	11.6.1	Yes
Application	f5	big-ip_advanced_firewall_manager	12.0.0	Yes
Application	f5	big-ip_advanced_firewall_manager	12.1.0	Yes
Application	f5	big-ip_advanced_firewall_manager	12.1.1	Yes
Application	f5	big-ip_advanced_firewall_manager	12.1.2	Yes
Application	f5	big-ip_analytics	11.4.0	Yes
Application	f5	big-ip_analytics	11.4.1	Yes
Application	f5	big-ip_analytics	11.5.0	Yes
Application	f5	big-ip_analytics	11.5.1	Yes
Application	f5	big-ip_analytics	11.5.2	Yes
Application	f5	big-ip_analytics	11.5.3	Yes
Application	f5	big-ip_analytics	11.5.4	Yes
Application	f5	big-ip_analytics	11.6.0	Yes
Application	f5	big-ip_analytics	11.6.1	Yes
Application	f5	big-ip_analytics	12.0.0	Yes
Application	f5	big-ip_analytics	12.1.0	Yes
Application	f5	big-ip_analytics	12.1.1	Yes
Application	f5	big-ip_analytics	12.1.2	Yes
Application	f5	big-ip_access_policy_manager	11.4.0	Yes
Application	f5	big-ip_access_policy_manager	11.4.1	Yes
Application	f5	big-ip_access_policy_manager	11.5.0	Yes
Application	f5	big-ip_access_policy_manager	11.5.1	Yes
Application	f5	big-ip_access_policy_manager	11.5.2	Yes
Application	f5	big-ip_access_policy_manager	11.5.3	Yes
Application	f5	big-ip_access_policy_manager	11.5.4	Yes
Application	f5	big-ip_access_policy_manager	11.6.0	Yes
Application	f5	big-ip_access_policy_manager	11.6.1	Yes
Application	f5	big-ip_access_policy_manager	12.0.0	Yes
Application	f5	big-ip_access_policy_manager	12.1.0	Yes
Application	f5	big-ip_access_policy_manager	12.1.1	Yes
Application	f5	big-ip_access_policy_manager	12.1.2	Yes
Application	f5	big-ip_application_security_manager	11.4.0	Yes
Application	f5	big-ip_application_security_manager	11.4.1	Yes
Application	f5	big-ip_application_security_manager	11.5.0	Yes
Application	f5	big-ip_application_security_manager	11.5.1	Yes
Application	f5	big-ip_application_security_manager	11.5.2	Yes
Application	f5	big-ip_application_security_manager	11.5.3	Yes
Application	f5	big-ip_application_security_manager	11.5.4	Yes
Application	f5	big-ip_application_security_manager	11.6.0	Yes
Application	f5	big-ip_application_security_manager	11.6.1	Yes
Application	f5	big-ip_application_security_manager	12.0.0	Yes
Application	f5	big-ip_application_security_manager	12.1.0	Yes
Application	f5	big-ip_application_security_manager	12.1.1	Yes
Application	f5	big-ip_application_security_manager	12.1.2	Yes
Application	f5	big-ip_global_traffic_manager	11.4.0	Yes
Application	f5	big-ip_global_traffic_manager	11.4.1	Yes
Application	f5	big-ip_global_traffic_manager	11.5.0	Yes
Application	f5	big-ip_global_traffic_manager	11.5.1	Yes
Application	f5	big-ip_global_traffic_manager	11.5.2	Yes
Application	f5	big-ip_global_traffic_manager	11.5.3	Yes
Application	f5	big-ip_global_traffic_manager	11.5.4	Yes
Application	f5	big-ip_global_traffic_manager	11.6.0	Yes
Application	f5	big-ip_global_traffic_manager	11.6.1	Yes
Application	f5	big-ip_link_controller	11.4.0	Yes
Application	f5	big-ip_link_controller	11.4.1	Yes
Application	f5	big-ip_link_controller	11.5.0	Yes
Application	f5	big-ip_link_controller	11.5.1	Yes
Application	f5	big-ip_link_controller	11.5.2	Yes
Application	f5	big-ip_link_controller	11.5.3	Yes
Application	f5	big-ip_link_controller	11.5.4	Yes
Application	f5	big-ip_link_controller	11.6.0	Yes
Application	f5	big-ip_link_controller	11.6.1	Yes
Application	f5	big-ip_link_controller	12.0.0	Yes
Application	f5	big-ip_link_controller	12.1.0	Yes
Application	f5	big-ip_link_controller	12.1.1	Yes
Application	f5	big-ip_link_controller	12.1.2	Yes
Application	f5	big-ip_policy_enforcement_manager	11.4.0	Yes
Application	f5	big-ip_policy_enforcement_manager	11.4.1	Yes
Application	f5	big-ip_policy_enforcement_manager	11.5.0	Yes
Application	f5	big-ip_policy_enforcement_manager	11.5.1	Yes
Application	f5	big-ip_policy_enforcement_manager	11.5.2	Yes
Application	f5	big-ip_policy_enforcement_manager	11.5.3	Yes
Application	f5	big-ip_policy_enforcement_manager	11.5.4	Yes
Application	f5	big-ip_policy_enforcement_manager	11.6.0	Yes
Application	f5	big-ip_policy_enforcement_manager	11.6.1	Yes
Application	f5	big-ip_policy_enforcement_manager	12.0.0	Yes
Application	f5	big-ip_policy_enforcement_manager	12.1.0	Yes
Application	f5	big-ip_policy_enforcement_manager	12.1.1	Yes
Application	f5	big-ip_policy_enforcement_manager	12.1.2	Yes
Application	f5	big-ip_protocol_security_module	11.4.0	Yes
Application	f5	big-ip_protocol_security_module	11.4.1	Yes

References

http://packetstormsecurity.com/files/141017/Ticketbleed-F5-TLS-Information-Disclosure.html ([email protected])
http://www.securityfocus.com/bid/96143 ([email protected])
http://www.securitytracker.com/id/1037800 Third Party Advisory, VDB Entry ([email protected])
https://blog.filippo.io/finding-ticketbleed/ ([email protected])
https://filippo.io/Ticketbleed/ ([email protected])
https://github.com/0x00string/oldays/blob/master/CVE-2016-9244.py ([email protected])
https://support.f5.com/csp/article/K05121675 Mitigation, Vendor Advisory ([email protected])
https://www.exploit-db.com/exploits/41298/ ([email protected])
http://packetstormsecurity.com/files/141017/Ticketbleed-F5-TLS-Information-Disclosure.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/96143 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1037800 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://blog.filippo.io/finding-ticketbleed/ (af854a3a-2127-422b-91ae-364da2661108)
https://filippo.io/Ticketbleed/ (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/0x00string/oldays/blob/master/CVE-2016-9244.py (af854a3a-2127-422b-91ae-364da2661108)
https://support.f5.com/csp/article/K05121675 Mitigation, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/41298/ (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For f5's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.