Atlassian Crowd Data Center and Server update for xmlsec

1) Information disclosure

EUVDB-ID: #VU58198

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-40690

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an issue where the "secureValidation" property is not passed correctly when creating a KeyInfo from a KeyInfoReference element. A remote attacker can abuse an XPath Transform to extract any local .xml files in a RetrievalMethod element.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Crowd Data Center: 5.0 - 5.2.1

Crowd: 5.0 - 5.2.1

CPE2.3

• cpe:2.3:a:atlassian:crowd_data_center:5.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:crowd_data_center:5.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:crowd_data_center:5.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:crowd:5.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:crowd:5.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:crowd:5.2.1:*:*:*:*:*:*:*

External links

https://jira.atlassian.com/browse/CWD-6190

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.