F5 BIG-IP up to TMM DNS Request resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as problematic has been found in F5 BIG-IP up to (Firewall Software). This affects some unknown functionality of the component TMM. The manipulation as part of a DNS Request leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

On F5 BIG-IP versions 13.1.0 -, when ASM and AVR are both provisioned, TMM may restart while processing DNS requests when the virtual server is configured with a DNS profile and the Protocol setting is set to TCP.

The bug was discovered 03/22/2018. The weakness was released 03/22/2018 (Website). The advisory is shared at support.f5.com. This vulnerability is uniquely identified as CVE-2018-5505 since 01/12/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118645 (F5 Networks BIG-IP : BIG-IP ASM and BIG-IP AFM/BIG-IP Analytics vulnerability (K23520761)), 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 371182 (F5 BIG-IP ASM Analytics Denial Of Service Vulnerability (K23520761)).

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 vulnerability database at Tenable (118645). Entries connected to this vulnerability are available at 114922, 114919, 114918 and 114920.







CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
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NVD Base Score: 5.9
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Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍


Nessus ID: 118645
Nessus Name: F5 Networks BIG-IP : BIG-IP ASM and BIG-IP AFM/BIG-IP Analytics vulnerability (K23520761)
Nessus File: 🔍
Nessus Risk: 🔍
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍


01/12/2018 🔍
03/21/2018 +68 days 🔍
03/22/2018 +1 days 🔍
03/22/2018 +0 days 🔍
03/22/2018 +0 days 🔍
03/22/2018 +0 days 🔍
03/23/2018 +1 days 🔍
11/02/2018 +224 days 🔍
02/22/2023 +1573 days 🔍


Vendor: f5.com

Advisory: K23520761
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5505 (🔍)
SecurityTracker: 1040559
SecurityFocus: 103505 - F5 BIG-IP ASM and Analytics CVE-2018-5505 Remote Denial of Service Vulnerability

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Created: 03/23/2018 10:05 AM
Updated: 02/22/2023 04:22 PM
Changes: 03/23/2018 10:05 AM (65), 01/16/2020 06:47 AM (10), 02/06/2021 06:09 AM (2), 02/22/2023 04:22 PM (3)
Complete: 🔍


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