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 This certificate has been revoked, however, usage of the atlassian-domain-for-localhost-connections-only.com domain name was still present in Confluence Server and Confluence Data Center.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.
CVE-2019-15006
This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 7.6%, top 8% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EPSS
- 77.3%
- KEV
- Not listed
Published
December 19, 2019
Last Modified
November 21, 2024
References (10)
- security@atlassianhttp://packetstormsecurity.com/files/155742/Atlassian-Confluence-Man-In-The-Middle.html
- security@atlassianhttps://confluence.atlassian.com/doc/confluence-security-advisory-2019-12-18-982324349.html
- security@atlassianhttps://jira.atlassian.com/browse/CONFSERVER-59244
- security@atlassianhttps://seclists.org/bugtraq/2019/Dec/36
- security@atlassianhttps://twitter.com/SwiftOnSecurity/status/1202034106495832067
- af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/155742/Atlassian-Confluence-Man-In-The-Middle.html
- af854a3a-2127-422b-91ae-364da2661108https://confluence.atlassian.com/doc/confluence-security-advisory-2019-12-18-982324349.html
- af854a3a-2127-422b-91ae-364da2661108https://jira.atlassian.com/browse/CONFSERVER-59244
- af854a3a-2127-422b-91ae-364da2661108https://seclists.org/bugtraq/2019/Dec/36
- af854a3a-2127-422b-91ae-364da2661108https://twitter.com/SwiftOnSecurity/status/1202034106495832067
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
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Dependency Blast Radius
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