CVE-2019-11848 : Security Advisory and Response
Learn about CVE-2019-11848, a vulnerability in the AT command API of ALEOS versions before 4.13.0, 4.9.5, 4.4.9. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
This CVE involves a vulnerability in the AT command API of ALEOS versions before 4.13.0, 4.9.5, and 4.4.9, allowing exploitation to abuse the API due to inadequate length validation of user-provided values.
Understanding CVE-2019-11848
This CVE pertains to a security flaw in the AT command API of ALEOS versions pre-4.13.0, 4.9.5, and 4.4.9.
What is CVE-2019-11848?
An API abuse vulnerability in the AT command API of ALEOS versions before 4.13.0, 4.9.5, and 4.4.9 due to insufficient length validation of certain user-provided values.
The Impact of CVE-2019-11848
- CVSS Score: 4.1 (Medium Severity)
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: High
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: Low
Technical Details of CVE-2019-11848
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability arises from the lack of proper length validation for specific user-provided values within the AT command API of ALEOS versions before 4.13.0, 4.9.5, and 4.4.9.
Affected Systems and Versions
- Affected Systems: ALEOS versions prior to 4.13.0, 4.9.5, and 4.4.9
- Affected Components: AT command API
Exploitation Mechanism
The vulnerability can be exploited by manipulating user-provided values that are not adequately checked for length, potentially leading to abuse of the API.
Mitigation and Prevention
Protective measures to address and prevent exploitation of the vulnerability.
Immediate Steps to Take
- Update ALEOS to versions 4.13.0, 4.9.5, or 4.4.9, which include fixes for this vulnerability.
- Implement strict input validation mechanisms to ensure user-provided values are within acceptable length limits.
Long-Term Security Practices
- Regularly monitor and apply security patches and updates to ALEOS to mitigate potential vulnerabilities.
- Conduct security assessments and audits to identify and address any security weaknesses.
Patching and Updates
Ensure timely installation of security patches and updates provided by the vendor to safeguard against known vulnerabilities.