CVE-2020-29668 : Security Advisory and Response

Sympa before 6.2.59b.2 allows remote attackers to obtain full SOAP API access by sending any arbitrary string (except one from an expired cookie) as the cookie value to authenticateAndRun.

Understanding CVE-2020-29668

Sympa before version 6.2.59b.2 is vulnerable to a security issue that enables attackers to gain unauthorized access to the SOAP API.

What is CVE-2020-29668?

CVE-2020-29668 is a vulnerability in Sympa that allows malicious actors to exploit the SOAP API by manipulating the cookie value.

The Impact of CVE-2020-29668

This vulnerability can lead to unauthorized access to the SOAP API, potentially compromising the confidentiality and integrity of data processed by Sympa.

Technical Details of CVE-2020-29668

Sympa before 6.2.59b.2 is susceptible to unauthorized access through the SOAP API due to improper cookie validation.

Vulnerability Description

The issue arises from the failure to properly validate the cookie value, allowing attackers to send arbitrary strings to authenticateAndRun.

Affected Systems and Versions

Systems running Sympa before version 6.2.59b.2 are vulnerable.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending any arbitrary string (excluding one from an expired cookie) as the cookie value to authenticateAndRun.

Mitigation and Prevention

To address CVE-2020-29668, follow these mitigation steps:

Immediate Steps to Take

Update Sympa to version 6.2.59b.2 or later to patch the vulnerability.
Monitor and restrict access to the SOAP API to trusted entities.

Long-Term Security Practices

Regularly review and update security configurations and protocols.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates provided by Sympa.