Unknown
CVE-2021-26138
CVE ID
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Unknown
(1 user assessed)
High
(1 user assessed)Unknown
Unknown
Unknown
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group with the username disabledsystemuser and a hardcoded password. A remote, unauthenticated attacker with knowledge of the hardcoded password could exploit this to log into Confluence and access all content accessible to users in the confluence-users group. This user account is created when installing versions 2.7.34, 2.7.35, and 3.0.2 of the app.
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Ratings
-
ExploitabilityHigh
Technical Analysis
On September 5th 2024, CISA released a security bulletin highlighting the cyber-attacks from a Russian actor. In this bulletin CISA confirmed and stated that this vulnerability was abused by the actor to bypass authentication and gain initial access.
Source: https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-249a
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Technical Analysis
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CVE ID
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