CVE-2020-26277 : Vulnerability Insights and Analysis

DBdeployer is a tool that deploys MySQL database servers easily. In DBdeployer before version 1.58.2, users unpacking a tarball may use a maliciously packaged tarball that contains symlinks to files external to the target. An attacker could induce dbdeployer to write into a system file, altering computer defenses. This CVE has a CVSS base score of 6.1 (Medium severity).

Understanding CVE-2020-26277

DBdeployer vulnerability allowing arbitrary read/write operations.

What is CVE-2020-26277?

DBdeployer vulnerability pre-version 1.58.2 enabling attackers to write into system files.

The Impact of CVE-2020-26277

Attack Complexity: High
Attack Vector: Network
Integrity Impact: High
User Interaction: Required
Scope: Changed
Exploitation may lead to unauthorized system file modifications.

Technical Details of CVE-2020-26277

DBdeployer vulnerability specifics.

Vulnerability Description

CWE-59: Improper Link Resolution Before File Access ('Link Following')
Users unpacking a tarball from an unsecure source may be exposed to symlink attacks.

Affected Systems and Versions

Product: dbdeployer
Vendor: datacharmer
Versions Affected: < 1.58.2

Exploitation Mechanism

Users unpacking maliciously packaged tarballs with symlinks to external files may lead to unauthorized write operations.

Mitigation and Prevention

Protecting systems from CVE-2020-26277.

Immediate Steps to Take

Update to version 1.58.2 or newer to mitigate the vulnerability.
Avoid unpacking tarballs from untrusted sources.

Long-Term Security Practices

Always verify the checksum of downloaded tarballs.
Limit root access for running dbdeployer.

Patching and Updates

Ensure dbdeployer is updated to version 1.58.2 or above to address the vulnerability.