F5 BIG-IP up to 12.1.1 Traffic Management Microkernel input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 12.1.1. This impacts an unknown function of the component Traffic Management Microkernel. Performing a manipulation results in input validation. This vulnerability is cataloged as CVE-2016-9249. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in F5 BIG-IP up to 12.1.1 (Firewall Software). This affects some unknown processing of the component Traffic Management Microkernel. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

An undisclosed traffic pattern received by a BIG-IP Virtual Server with TCP Fast Open enabled may cause the Traffic Management Microkernel (TMM) to restart, resulting in a Denial-of-Service (DoS).

The bug was discovered 01/26/2017. The weakness was shared 01/26/2017 as K71282001 (Website). It is possible to read the advisory at support.f5.com. This vulnerability is uniquely identified as CVE-2016-9249 since 11/09/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

If the Fast Open option is enabled in a TCP profile assigned to a BIG-IP virtual server, an attacker could cause the Traffic Management Microkernel (TMM) to restart, resulting in a denial-of-service (DoS).

The vulnerability scanner Nessus provides a plugin with the ID 96781 (F5 Networks BIG-IP : TMM vulnerability (K71282001)), 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 370462 (F5 BIG-IP ASM TMM Denial of Service Vulnerability (K71282001)).

Upgrading to version 11.2.1, 11.6.1 or 12.1.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96781), SecurityFocus (BID 95825†) and SecurityTracker (ID 1037715†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 96781
Nessus Name: F5 Networks BIG-IP : TMM vulnerability (K71282001)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800325
OpenVAS Name: F5 BIG-IP - TMM vulnerability CVE-2016-9249
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: BIG-IP 11.2.1/11.6.1/12.1.2

Timelineinfo

11/09/2016 🔍
01/26/2017 +78 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
01/27/2017 +1 days 🔍
01/27/2017 +0 days 🔍
01/31/2017 +3 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K71282001
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9249 (🔍)
GCVE (CVE): GCVE-0-2016-9249
GCVE (VulDB): GCVE-100-96039
SecurityFocus: 95825 - Multiple F5 BIG-IP Products CVE-2016-9249 Denial of Service Vulnerability
OSVDB: - CVE-2016-9249 - BIG-IP Virtual Server - Denial of Service Issue
SecurityTracker: 1037715

Entryinfo

Created: 01/27/2017 08:23
Changes: 01/27/2017 08:23 (85)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!