Every instance of Atlassian Confluence was susceptible to a breach. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5. To check whether this is enabled go to COG > User Management > User Signup Options. ![]() The vulnerable endpoints can be accessed by a non-administrator user or unauthenticated user if ‘Allow people to sign up to create their account’ is enabled. In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an authenticated user, and in some instances an unauthenticated user, to execute arbitrary code on a Confluence Server or Data Center instance. The CVE explicitly states that two conditions had to be true: you must have been running the affected version of Confluence AND “‘Allow people to sign up to create their account’ is enabled.”. CVE-2021-26084īefore explaining why you are compromised, and before explaining why it is too late, let me clarify the CVE itself which is materially incorrect. ![]() On August 25th Atlassian disclosed a vulnerability in Confluence ( CVE-2021-26084) and if your organization was running an affected version of Confluence there is no point in assuming you were compromised, just know that you were. ![]() They were too slow to provide useful information, but they were right. There were ample signs something big was brewing as all US agencies were issuing warning for Labor Day Weekend.
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