CVE-2020-28473 : Security Advisory and Response

Web Cache Poisoning vulnerability in the bottle package versions 0 to 0.12.19 allows attackers to manipulate requests, potentially leading to cache poisoning.

Understanding CVE-2020-28473

This CVE involves a vulnerability in the bottle package that could be exploited for Web Cache Poisoning.

What is CVE-2020-28473?

The package bottle versions 0 to 0.12.19 are susceptible to Web Cache Poisoning through parameter cloaking, enabling attackers to manipulate requests and potentially poison caches.

The Impact of CVE-2020-28473

CVSS Base Score: 6.8 (Medium Severity)
Attack Vector: Network
Attack Complexity: High
Integrity Impact: High
Availability Impact: High
User Interaction: Required
Exploit Code Maturity: Proof of Concept
Remediation Level: Official Fix
Vulnerability Description: Web Cache Poisoning

Technical Details of CVE-2020-28473

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability allows attackers to conduct Web Cache Poisoning by manipulating query parameters using a semicolon, leading to misinterpretation between the proxy and server.

Affected Systems and Versions

Affected Versions: 0 to 0.12.19
Vendor: N/A

Exploitation Mechanism

Attackers can exploit the vulnerability by inserting semicolons in query parameters to deceive the proxy and server, potentially poisoning the cache.

Mitigation and Prevention

Protect your systems from CVE-2020-28473 with these mitigation strategies.

Immediate Steps to Take

Update the bottle package to a non-vulnerable version.
Monitor and filter input to prevent malicious parameter manipulation.
Implement security controls to detect and prevent cache poisoning attacks.

Long-Term Security Practices

Regularly update software and dependencies to patch vulnerabilities.
Conduct security assessments and audits to identify and mitigate potential risks.

Patching and Updates

Apply official fixes and security updates promptly to address the vulnerability.