Home/CVE/The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote
CVE

CVE-2019-20104

The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote

The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.

HIGH · CVSS 7.5 EPSS 0.02432
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
▤

Affected Products & Versions

7
atlassian crowd< 3.2.11
atlassian crowd>= 3.3.0 and < 3.3.8
atlassian crowd>= 3.4.0 and < 3.4.7
atlassian crowd>= 3.5.0 and < 3.5.2
atlassian crowd>= 3.6.0 and < 3.6.2
atlassian crowd>= 3.6.3 and < 3.7.1
atlassian crowd>= 3.7.2 and < 4.0.0
⚠

Public Exploits & PoCs

1
poczeroauth.ltd · cve-2019-20104-atlassian-crowd-openid-client-vulnerable-t...zeroauth.ltd
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security@atlassian.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Feb 2020 · 03:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://jira.atlassian.com/browse/CWD-5526Vendor Advisory
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