Vulnerability record · CVE-2019-15006 · published 19 December 2019
CVE-2019-15006: Atlassian confluence improper control of dynamically-managed code vulnerability
Atlassian · Confluence
There was a man-in-the-middle (MITM) vulnerability present in the Confluence Previews plugin in Confluence Server and Confluence Data Center. This plugin was used to facilitate communication with the Atlassian Companion application. The Confluence Previews plugin in Confluence Server and Confluence Data Center communicated with the Companion application via the atlassian-domain-for-localhost-connections-only.com domain name, the DNS A record of which points at 127.0.0.1. Additionally, a signed certificate for the domain was publicly distributed with the Companion application. An attacker in the position to control DNS resolution of their victim could carry out a man-in-the-middle (MITM) attack between Confluence Server (or Confluence Data Center) and the atlassian-domain-for-localhost-connections-only.com domain intended to be used with the Companion application. This certificate has been revoked, however, usage of the atlassian-domain-for-localhost-connections-only.com domain name was still present in Confluence Server and Confluence Data Center. An attacker could perform the described attack by denying their victim access to certificate revocation information, and carry out a man-in-the-middle (MITM) attack to observe files being edited using the Companion application and/or modify them, and access some limited user information.
Description
There was a man-in-the-middle (MITM) vulnerability present in the Confluence Previews plugin in Confluence Server and Confluence Data Center. This plugin was used to facilitate communication with the Atlassian Companion application. The Confluence Previews plugin in Confluence Server and Confluence Data Center communicated with the Companion application via the atlassian-domain-for-localhost-connections-only.com domain name, the DNS A record of which points at 127.0.0.1. Additionally, a signed certificate for the domain was publicly distributed with the Companion application. An attacker in the position to control DNS resolution of their victim could carry out a man-in-the-middle (MITM) attack between Confluence Server (or Confluence Data Center) and the atlassian-domain-for-localhost-connections-only.com domain intended to be used with the Companion application. This certificate has been revoked, however, usage of the atlassian-domain-for-localhost-connections-only.com domain name was still present in Confluence Server and Confluence Data Center. An attacker could perform the described attack by denying their victim access to certificate revocation information, and carry out a man-in-the-middle (MITM) attack to observe files being edited using the Companion application and/or modify them, and access some limited user information.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Affected products
2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| http://packetstormsecurity.com/files/155742/Atlassian-Confluence-Man-In-The-Middle.html | Third Party AdvisoryVDB Entry |
| https://confluence.atlassian.com/doc/confluence-security-advisory-2019-12-18-982324349.html | PatchVendor Advisory |
| https://jira.atlassian.com/browse/CONFSERVER-59244 | PatchVendor Advisory |
| https://seclists.org/bugtraq/2019/Dec/36 | Mailing ListThird Party Advisory |
| https://twitter.com/SwiftOnSecurity/status/1202034106495832067 | Issue TrackingThird Party Advisory |
| http://packetstormsecurity.com/files/155742/Atlassian-Confluence-Man-In-The-Middle.html | Third Party AdvisoryVDB Entry |
| https://confluence.atlassian.com/doc/confluence-security-advisory-2019-12-18-982324349.html | PatchVendor Advisory |
| https://jira.atlassian.com/browse/CONFSERVER-59244 | PatchVendor Advisory |
| https://seclists.org/bugtraq/2019/Dec/36 | Mailing ListThird Party Advisory |
| https://twitter.com/SwiftOnSecurity/status/1202034106495832067 | Issue TrackingThird Party Advisory |
Track CVE-2019-15006 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
Source: NIST National Vulnerability Database (record CVE-2019-15006), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.
