F5 BIG-IP ASM up to 11.5.6/11.6.3.1/12.1.3.5/13.1.0.1 bd HTTP Requests resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability was found in F5 BIG-IP ASM up to 11.5.6/11.6.3.1/12.1.3.5/13.1.0.1 (Firewall Software) and classified as problematic. Affected by this issue is some unknown processing of the component bd. The manipulation as part of a HTTP Requests leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

When F5 BIG-IP ASM 13.0.0-13.1.0.1, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.5.1-11.5.6 is processing HTTP requests, an unusually large number of parameters can cause excessive CPU usage in the BIG-IP ASM bd process.

The bug was discovered 07/25/2018. The weakness was presented 07/25/2018 (Website). The advisory is available at support.f5.com. This vulnerability is handled as CVE-2018-5541 since 01/11/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 118631 (F5 Networks BIG-IP : BIG-IP ASM vulnerability (K12403422)), 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 371106 (F5 BIG-IP ASM bd process denial of service vulnerability (K12403422)).

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 (118631) and SecurityFocus (BID 104906†). See VDB-122197 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118631
Nessus Name: F5 Networks BIG-IP : BIG-IP ASM vulnerability (K12403422)
Nessus File: 🔍
Nessus Risk: 🔍
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/11/2018 🔍
07/11/2018 +180 days 🔍
07/24/2018 +13 days 🔍
07/25/2018 +0 days 🔍
07/25/2018 +0 days 🔍
07/25/2018 +0 days 🔍
07/26/2018 +1 days 🔍
11/02/2018 +99 days 🔍
04/25/2023 +1635 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K12403422
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5541 (🔍)
GCVE (CVE): GCVE-0-2018-5541
GCVE (VulDB): GCVE-100-122198
SecurityFocus: 104906 - F5 BIG-IP ASM CVE-2018-5541 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/26/2018 07:53 AM
Updated: 04/25/2023 05:39 PM
Changes: 07/26/2018 07:53 AM (69), 03/10/2020 11:01 AM (6), 04/25/2023 05:39 PM (4)
Complete: 🔍
Cache ID: 18:FB5:40

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