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.
4.6	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in F5 BIG-IP Manager 11.5.1. This vulnerability affects unknown code of the component FastL4 Virtual Server. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2015-4638. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in F5 BIG-IP Manager 11.5.1 (Firewall Software). This affects some unknown functionality of the component FastL4 Virtual Server. 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 weakness was released 09/08/2015 as sol17155 as confirmed advisory (Website). It is possible to read the advisory at support.f5.com. This vulnerability is uniquely identified as CVE-2015-4638 since 06/16/2015. 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 vulnerability scanner Nessus provides a plugin with the ID 85852 (F5 Networks BIG-IP : TMM vulnerability (K17155)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks.

The vulnerability is also documented in the databases at X-Force (106396), Tenable (85852) and Vulnerability Center (SBV-52815†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP Manager

Version

• 11.5.1

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 85852
Nessus Name: F5 Networks BIG-IP : TMM vulnerability (K17155)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 800325
OpenVAS Name: F5 BIG-IP - SOL17155 - TMM vulnerability CVE-2015-4638
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/16/2015 🔍
09/08/2015 +84 days 🔍
09/09/2015 +1 days 🔍
09/18/2015 +9 days 🔍
09/18/2015 +0 days 🔍
09/20/2015 +2 days 🔍
06/15/2022 +2460 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: sol17155
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-4638 (🔍)
GCVE (CVE): GCVE-0-2015-4638
GCVE (VulDB): GCVE-100-77751
X-Force: 106396 - F5 BIG-IP FastL4 virtual server denial of service
SecurityTracker: 1033578
Vulnerability Center: 52815 - F5 BIG-IP Multiple Products Remote Bypass Restrictions via a Fragmented Packet, High

Entryinfo

Created: 09/18/2015 11:26
Updated: 06/15/2022 17:45
Changes: 09/18/2015 11:26 (55), 01/02/2018 09:56 (11), 06/15/2022 17:38 (4), 06/15/2022 17:45 (1)
Complete: 🔍
Cache ID: 216:DF3:103

Discussion

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