F5 BIG-IP AFM up to TMUI Reflected cross site scripting

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.

A vulnerability was found in F5 BIG-IP AFM up to (Firewall Software). It has been rated as problematic. This issue affects an unknown code of the component TMUI. The manipulation with an unknown input leads to a cross site scripting vulnerability (Reflected). Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

On F5 BIG-IP AFM 13.0.0- and 12.1.0-, there is a Reflected Cross Site Scripting vulnerability in undisclosed TMUI page.

The bug was discovered 10/08/2018. The weakness was released 10/19/2018 (Website). The advisory is shared at support.f5.com. The identification of this vulnerability is CVE-2018-15313 since 08/14/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 118640 (F5 Networks BIG-IP : XSS vulnerability in undisclosed TMUI page (K21042153)), 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 371272 (F5 BIG-IP ASM undisclosed TMUI page Reflected Cross-Site Scripting Vulnerability (K21042153,K04524282) (Deprecated)).

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

The vulnerability is also documented in the databases at Tenable (118640) and SecurityFocus (BID 105733†). Entry connected to this vulnerability is available at VDB-125802.







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍



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

NVD Base Score: 🔍


Name: Reflected
Class: Cross site scripting / Reflected
CWE: CWE-79 / CWE-74 / CWE-707

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 118640
Nessus Name: F5 Networks BIG-IP : XSS vulnerability in undisclosed TMUI page (K21042153)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍


08/14/2018 🔍
10/08/2018 +55 days 🔍
10/18/2018 +10 days 🔍
10/18/2018 +0 days 🔍
10/19/2018 +0 days 🔍
10/19/2018 +0 days 🔍
10/20/2018 +1 days 🔍
11/02/2018 +13 days 🔍
05/30/2023 +1670 days 🔍


Vendor: f5.com

Advisory: K21042153
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-15313 (🔍)
SecurityTracker: 1041934
SecurityFocus: 105733 - F5 BIG-IP AFM Multiple Cross Site Scripting Vulnerabilities

See also: 🔍


Created: 10/20/2018 08:59 AM
Updated: 05/30/2023 01:17 PM
Changes: 10/20/2018 08:59 AM (70), 04/05/2020 04:56 PM (6), 05/30/2023 01:17 PM (5)
Complete: 🔍
Cache ID: 44:C20:40


No comments yet. Languages: en.

Please log in to comment.

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!