Security News > 2021 > September > Jenkins project's Confluence server hacked to mine Monero
Hackers exploiting the recently disclosed Atlassian Confluence remote code execution vulnerability breached an internal server from the Jenkins project.
While the attack is concerning because Jenkins is a popular open-source server for automating parts of software development, there is no reason that the project releases, plugins, or code have been impacted.
As BleepingComputer reported last week, after the proof-of-concept exploit code for CVE-2021-26084 became public, threat actors started to scan for vulnerable Atlassian Confluence instances to install cryptocurrency miners.
Last week, administrators of the Jenkins project discovered that one of their deprecated Confluence server fell victim to one of these attacks.
"Thus far in our investigation, we have learned that the Confluence CVE-2021-26084 exploit was used to install what we believe was a Monero miner in the container running the service. From there an attacker would not be able to access much of our other infrastructure" - Mark Waite, Jenkins Documentation Officer.
Although there is no evidence suggesting that the attacker stole developer credentials, Jenkins project managers are being careful and have reset passwords for all accounts in the integrated identity system that also included the deprecated Confluence service.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-08-30 | CVE-2021-26084 | Expression Language Injection vulnerability in Atlassian Confluence Data Center and Confluence Server In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. | 9.8 |