F5 BIG-IP Virtual Server Client SSL information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in F5 BIG-IP Virtual Server. Affected by this vulnerability is an unknown functionality of the component Client SSL. The manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2016-9244. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in F5 BIG-IP Virtual Server (Firewall Software) (version now known). It has been rated as problematic. This issue affects some unknown processing of the component Client SSL. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

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.

The bug was discovered 02/09/2017. The weakness was disclosed 02/09/2017 by Ege Balci (Website). It is possible to read the advisory at support.f5.com. The identification of this vulnerability is CVE-2016-9244 since 11/09/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

A public exploit has been developed by Ege Balci and been published 1 days after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 97091 (F5 Networks BIG-IP : F5 TLS vulnerability (K05121675) (Ticketbleed)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370302 (F5 BIG-IP ASM Session Tickets Information Disclosure Vulnerability (Ticketbleed) (K05121675)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (41298), Tenable (97091), SecurityFocus (BID 96143†) and SecurityTracker (ID 1037800†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Ege Balci
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97091
Nessus Name: F5 Networks BIG-IP : F5 TLS vulnerability (K05121675) (Ticketbleed)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800325
OpenVAS Name: F5 BIG-IP - TMM SSO plugin vulnerability CVE-2016-7467
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍
Suricata ID: 2023896
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

11/09/2016 🔍
02/08/2017 +91 days 🔍
02/09/2017 +1 days 🔍
02/09/2017 +0 days 🔍
02/09/2017 +0 days 🔍
02/09/2017 +0 days 🔍
02/09/2017 +0 days 🔍
02/09/2017 +0 days 🔍
02/10/2017 +1 days 🔍
02/10/2017 +0 days 🔍
02/10/2017 +0 days 🔍
07/07/2024 +2704 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K05121675
Researcher: Ege Balci
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9244 (🔍)
GCVE (CVE): GCVE-0-2016-9244
GCVE (VulDB): GCVE-100-96767
SecurityFocus: 96143 - Multiple F5 BIG-IP Products CVE-2016-9244 Information Disclosure Vulnerability
SecurityTracker: 1037800

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/09/2017 19:33
Updated: 07/07/2024 20:16
Changes: 02/09/2017 19:33 (86), 02/06/2020 22:03 (7), 11/12/2022 14:07 (3), 07/07/2024 20:16 (15)
Complete: 🔍
Cache ID: 216::103

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