High severity · published Jun 1, 2020
CVE-2020-4020
The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is…
7.2
CVSS
1.7%
EPSS
No
On KEV
Description
The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is connected to, execute arbitrary .exe files via a Protection Mechanism Failure.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Companion · Atlassian
before 1.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-4020
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-4020
Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-59733
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