Denial of Service Vulnerability in Atlassian Crowd OpenID Client
CVE-2019-20104

7.5HIGH

Key Information:

Vendor
Atlassian
Status
Crowd
Vendor
CVE Published:
6 February 2020

Summary

The OpenID client application in Atlassian Crowd versions prior to 3.6.2 and between 3.7.0 and 3.7.1 is susceptible to a Denial of Service attack through an XML Entity Expansion vulnerability. This flaw allows remote attackers to exploit the system, potentially leading to service disruptions and impacting the application’s accessibility.

Affected Version(s)

Crowd < 3.6.2

Crowd 3.7.0

Crowd < 3.7.1

References

https://jira.atlassian.com/browse/CWD-5526
x_refsource_MISC
https://zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlas...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.