CVE-2023-22518

Atlassian Confluence Data Center and Server: Improper Authorization

As of , CVE-2023-22518 in Atlassian Confluence Data Center and Server is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 7 November 2023
US federal deadline
28 November 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Known
EPSS score
0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.00 on 7 November 2023EPSS on the day CISA listed it.
Public exploit
1 Metasploit module
Fix
Vendor advice: confluence.atlassian.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

What the flaw is

Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker. There is no impact on confidentiality since the attacker cannot exfiltrate any data.

CISA's description

All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.

The CVE record's description, from atlassian

CVE published
31 October 2023
Assigned by
atlassian
CVSS
10.0 Critical (CVSS 3.0, from the CNA)
CWE-863
Incorrect Authorization
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
partial

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

  • Metasploit: Atlassian Confluence Unauth JSON setup-restore Improper Authorization leading to RCE (CVE-2023-22518)exploit module, rank excellent

Confluence Data Center and Server: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2023-22527Template InjectionAtlassian Confluence Data Center and ServerPatch this weekRansomware use; Metasploit module; EPSS 0.990.99
CVE-2023-22515Broken Access ControlAtlassian Confluence Data Center and ServerPatch this weekRansomware use; Metasploit module; EPSS 0.990.99

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