CVE-2017-18105 : What You Need to Know

Atlassian Crowd before version 3.0.2 and between version 3.1.0 and 3.1.1 had a vulnerability allowing remote attackers to gain unauthorized access to certain resources.

Understanding CVE-2017-18105

This CVE involves a session fixation flaw in Atlassian Crowd, potentially leading to unauthorized access.

What is CVE-2017-18105?

The vulnerability in Atlassian Crowd allowed remote attackers to exploit a session fixation flaw, potentially gaining unauthorized access to specific resources.

The Impact of CVE-2017-18105

The vulnerability could be exploited by attackers to acquire a user's JSESSIONID cookie, leading to unauthorized access to built-in and third-party rest resources.

Technical Details of CVE-2017-18105

This section provides detailed technical information about the CVE.

Vulnerability Description

The console login resource in Atlassian Crowd before version 3.0.2 and between version 3.1.0 and 3.1.1 allowed remote attackers, who obtained a user's JSESSIONID cookie, to access certain resources due to a session fixation vulnerability.

Affected Systems and Versions

Product: Atlassian Crowd
Versions Affected:
Less than 3.0.2
Between 3.1.0 and 3.1.1

Exploitation Mechanism

The vulnerability could be exploited by remote attackers who acquired a user's JSESSIONID cookie, allowing them to gain unauthorized access to specific resources.

Mitigation and Prevention

Protect your systems from CVE-2017-18105 with these mitigation strategies.

Immediate Steps to Take

Upgrade Atlassian Crowd to version 3.0.2 or above.
Monitor and restrict access to JSESSIONID cookies.

Long-Term Security Practices

Regularly audit and update session management mechanisms.
Implement multi-factor authentication to enhance security.

Patching and Updates

Apply security patches provided by Atlassian promptly to address the vulnerability.