CVE-2020-27207 : Vulnerability Insights and Analysis

Zetetic SQLCipher 4.x before 4.4.1 is susceptible to a use-after-free vulnerability, allowing for a remote denial of service attack through crafted SQL commands.

Understanding CVE-2020-27207

This CVE involves a critical vulnerability in Zetetic SQLCipher version 4.x before 4.4.1, posing a risk of remote denial of service attacks.

What is CVE-2020-27207?

The vulnerability in Zetetic SQLCipher 4.x before 4.4.1 allows attackers to trigger a use-after-free condition, leading to a remote denial of service exploit. By executing a specially crafted SQL command sequence, an attacker can cause unexpected RAM data to be read.

The Impact of CVE-2020-27207

The exploitation of this vulnerability can result in a remote denial of service attack, potentially disrupting the availability of the affected system or service.

Technical Details of CVE-2020-27207

Zetetic SQLCipher 4.x before 4.4.1 is affected by a critical use-after-free vulnerability, as detailed below:

Vulnerability Description

The vulnerability is related to sqlcipher_codec_pragma and sqlite3Strlen30 in sqlite3.c.

Affected Systems and Versions

Product: Zetetic SQLCipher
Version: 4.x before 4.4.1

Exploitation Mechanism

Attackers can exploit this vulnerability through a SQL injection attack, executing a crafted SQL command sequence to trigger the use-after-free condition.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-27207:

Immediate Steps to Take

Update Zetetic SQLCipher to version 4.4.1 or later to patch the vulnerability.
Monitor and restrict SQL input to prevent SQL injection attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement secure coding practices to prevent memory-related vulnerabilities.

Patching and Updates

Apply security patches and updates provided by Zetetic for SQLCipher to ensure ongoing protection against vulnerabilities.