F5 BIG-IP up to 12.1.3.1/13.1.0.3 TMM input validation

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

Summaryinfo

A vulnerability was found in F5 BIG-IP up to 12.1.3.1/13.1.0.3. It has been rated as problematic. This affects an unknown part of the component TMM. This manipulation causes input validation. The identification of this vulnerability is CVE-2018-5503. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in F5 BIG-IP up to 12.1.3.1/13.1.0.3 (Firewall Software). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component TMM. The manipulation with an unknown input 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 F5 BIG-IP versions 13.0.0 - 13.1.0.3 or 12.0.0 - 12.1.3.1, TMM may restart when processing a specifically crafted page through a virtual server with an associated PEM policy that has content insertion as an action.

The bug was discovered 03/22/2018. The weakness was shared 03/22/2018 (Website). It is possible to read the advisory at support.f5.com. This vulnerability is known as CVE-2018-5503 since 01/12/2018. 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 vulnerability scanner Nessus provides a plugin with the ID 118682 (F5 Networks BIG-IP : BIG-IP PEM vulnerability (K54562183)), 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 370844 (F5 BIG-IP ASM TMM WebSocket and PEM Policy Denial of Service Vulnerabilities (K11718033)).

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 (118682). The entry VDB-114920 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118682
Nessus Name: F5 Networks BIG-IP : BIG-IP PEM vulnerability (K54562183)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/12/2018 🔍
03/21/2018 +68 days 🔍
03/22/2018 +1 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 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K54562183
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5503 (🔍)
GCVE (CVE): GCVE-0-2018-5503
GCVE (VulDB): GCVE-100-114919
SecurityTracker: 1040560

See also: 🔍

Entryinfo

Created: 03/23/2018 10:04
Updated: 02/22/2023 16:06
Changes: 03/23/2018 10:04 (62), 01/15/2020 21:24 (8), 02/05/2021 18:31 (3), 02/22/2023 16:06 (3)
Complete: 🔍
Cache ID: 216::103

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

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