F5 BIG-IP up to 13.1.3.1/14.0.1/14.1.2.3/15.0.1 iRule POST Request release of resource

Summaryinfo

A vulnerability was found in F5 BIG-IP up to 13.1.3.1/14.0.1/14.1.2.3/15.0.1. It has been classified as problematic. This vulnerability affects unknown code of the component iRule Handler. This manipulation as part of POST Request causes release of resource. This vulnerability appears as CVE-2020-5883. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 13.1.3.1/14.0.1/14.1.2.3/15.0.1 (Firewall Software). It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component iRule Handler. The manipulation as part of a POST Request leads to a release of resource vulnerability. The CWE definition for the vulnerability is CWE-772. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. As an impact it is known to affect availability. The summary by CVE is:

On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.3, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, when a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.

The weakness was presented 04/30/2020 (Website). It is possible to read the advisory at support.f5.com. This vulnerability is known as CVE-2020-5883 since 01/06/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/01/2020). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-154666, VDB-154665, VDB-154664 and VDB-154662 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 13.1.3.0
• 13.1.3.1
• 14.0.0
• 14.0.1
• 14.1.2.0
• 14.1.2.1
• 14.1.2.2
• 14.1.2.3
• 15.0.0
• 15.0.1

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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