F5 BIG-IP up to 11.2.1/11.5.5/11.6.1/12.1.2/13.0.0 mod_auth_f5_auth_token.cpp Brute Force credentials management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.4 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in F5 BIG-IP up to 11.2.1/11.5.5/11.6.1/12.1.2/13.0.0 (Firewall Software). This vulnerability affects an unknown function of the file mod_auth_f5_auth_token.cpp. The manipulation with an unknown input leads to a credentials management vulnerability (Brute Force). The CWE definition for the vulnerability is CWE-255. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
In F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, or 11.2.1 the Apache modules apache_auth_token_mod and mod_auth_f5_auth_token.cpp allow possible unauthenticated bruteforce on the em_server_ip authorization parameter to obtain which SSL client certificates used for mutual authentication between BIG-IQ or Enterprise Manager (EM) and managed BIG-IP devices.
The bug was discovered 04/13/2018. The weakness was published 04/13/2018 (Website). The advisory is shared for download at support.f5.com. This vulnerability was named CVE-2018-5506 since 01/12/2018. The attack can be initiated remotely. The successful exploitation requires a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1552.
The vulnerability scanner Nessus provides a plugin with the ID 118692 (F5 Networks BIG-IP : Apache vulnerability (K65355492)), 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 370893 (F5 BIG-IP ASM Apache Modules Information Disclosure Vulnerability (K65355492)).
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 vulnerability database at Tenable (118692). Similar entries are available at 116204, 116203 and 116201.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
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CVSSv3
VulDB Meta Base Score: 8.5VulDB Meta Temp Score: 8.4
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
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Exploiting
Name: Brute ForceClass: Credentials management / Brute Force
CWE: CWE-255
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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Nessus ID: 118692
Nessus Name: F5 Networks BIG-IP : Apache vulnerability (K65355492)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
01/12/2018 🔍04/12/2018 🔍
04/13/2018 🔍
04/13/2018 🔍
04/13/2018 🔍
04/16/2018 🔍
11/02/2018 🔍
02/28/2023 🔍
Sources
Vendor: f5.comAdvisory: K65355492
Status: Not defined
Confirmation: 🔍
CVE: CVE-2018-5506 (🔍)
See also: 🔍
Entry
Created: 04/16/2018 09:11Updated: 02/28/2023 08:43
Changes: 04/16/2018 09:11 (64), 01/25/2020 08:19 (8), 02/28/2023 08:43 (4)
Complete: 🔍
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