Vulnerabilities > CVE-2019-6662 - Information Exposure Through Log Files vulnerability in F5 products
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
On BIG-IP 13.1.0-13.1.1.4, sensitive information is logged into the local log files and/or remote logging targets when restjavad processes an invalid request. Users with access to the log files would be able to view that data.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Fuzzing and observing application log data/errors for application mapping An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes the application's log or error messages returned. Fuzzing techniques involve sending random or malformed messages to a target and monitoring the target's response. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to observe the application's log and error messages, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash. By observing logs and error messages, the attacker can learn details about the configuration of the target application and might be able to cause the target to disclose sensitive information.
Nessus
| NASL family | F5 Networks Local Security Checks |
| NASL id | F5_BIGIP_SOL01049383.NASL |
| description | Sensitive information is logged into the local log files and/or remote logging targets when restjavad processes an invalid request. Users with access to the log files would be able to view that data. (CVE-2019-6662) Impact When logging invalid requests,such as HTTP code 400 errors, the restjavad process includes the request body in the log message. During authentication operations, the request body includes credentialsand potentially other sensitive data, which is propagated to the log. No information is directly exposed, and attacks will not be able to take control when 400 errors occur, butwhen the system is in a state in which processing errors occur, sensitive data may be logged. Users with access to logs will be able to view that data. |
| last seen | 2020-03-17 |
| modified | 2019-12-31 |
| plugin id | 132549 |
| published | 2019-12-31 |
| reporter | This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/132549 |
| title | F5 Networks BIG-IP : BIG-IP restjavad vulnerability (K01049383) |