F5 BIG-IP APM up to 11.6.3.1/12.1.3.3/13.1.0.3 Apmd SAML Assertion input validation

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7.3	$0-$5k	0.00

A vulnerability classified as critical was found in F5 BIG-IP APM up to 11.6.3.1/12.1.3.3/13.1.0.3 (Firewall Software). Affected by this vulnerability is some unknown functionality of the component Apmd. The manipulation as part of a SAML Assertion leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

On BIG-IP APM 11.6.0-11.6.3.1, 12.1.0-12.1.3.3, 13.0.0, and 13.1.0-13.1.0.3, APMD may core when processing SAML Assertion or response containing certain elements.

The bug was discovered 09/12/2018. The weakness was released 09/13/2018 (Website). The advisory is shared at support.f5.com. This vulnerability is known as CVE-2018-5549 since 01/11/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118621 (F5 Networks BIG-IP : BIG-IP APM SAML IdP vulnerability (K05018525)), 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.

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 (118621). Entry connected to this vulnerability is available at 124020.

Productinfo

Type

Firewall Software

Vendor

Name

BIG-IP APM

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 118621
Nessus Name: F5 Networks BIG-IP : BIG-IP APM SAML IdP vulnerability (K05018525)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/11/2018 🔍
09/12/2018 +243 days 🔍
09/12/2018 +0 days 🔍
09/13/2018 +0 days 🔍
09/13/2018 +0 days 🔍
09/13/2018 +0 days 🔍
09/14/2018 +1 days 🔍
11/02/2018 +49 days 🔍
05/16/2023 +1656 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K05018525
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5549 (🔍)
SecurityFocus: 105345 - F5 BIG-IP APM CVE-2018-5549 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/14/2018 07:17
Updated: 05/16/2023 10:05
Changes: 09/14/2018 07:17 (67), 03/23/2020 16:33 (6), 05/16/2023 10:05 (4)
Complete: 🔍