Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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 Entity Expansion vulnerability.

Published

2020-02-06T03:15:10.123

Last Modified

2024-11-21T04:38:04.280

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-776

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	atlassian	crowd	< 3.2.11	Yes
Application	atlassian	crowd	< 3.3.8	Yes
Application	atlassian	crowd	< 3.4.7	Yes
Application	atlassian	crowd	< 3.5.2	Yes
Application	atlassian	crowd	< 3.6.2	Yes
Application	atlassian	crowd	< 3.7.1	Yes
Application	atlassian	crowd	< 4.0.0	Yes

References

https://jira.atlassian.com/browse/CWD-5526 Vendor Advisory ([email protected])
https://zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulnerable-to-remote-dos-via-xml-entity-expansion/ Exploit, Technical Description ([email protected])
https://jira.atlassian.com/browse/CWD-5526 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulnerable-to-remote-dos-via-xml-entity-expansion/ Exploit, Technical Description (af854a3a-2127-422b-91ae-364da2661108)