High severity · published Feb 6, 2020
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 attackers to perform a Denial of Service attack via an XML…
7.5
CVSS
2.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Crowd · Atlassian
before 3.2.11; 3.3.0 before 3.3.8; 3.4.0 before 3.4.7; 3.5.0 before 3.5.2; 3.6.0 before 3.6.2; 3.6.3 before 3.7.1; +1 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-20104
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-20104
Vendor Advisory
https://jira.atlassian.com/browse/CWD-5526
Exploit
https://zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulnerable-to-remote-dos-via-xml-entity-expansion/
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