CVE-2022-26134

Atlassian Confluence Server/Data Center: Confluence Server and Data Center Remote Code Execution

As of , CVE-2022-26134 in Atlassian Confluence Server/Data Center 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 2 June 2022
US federal deadline
6 June 20224 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
No score that dayThe EPSS file of the day CISA listed it has no score for it.
Public exploit
1 Metasploit module and 1 Exploit-DB entry
Fix
No vendor link in CISA's entry

What CISA says to do

Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.

CISA's required action

What the flaw is

Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.

CISA's description

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. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.

The CVE record's description, from atlassian

CVE published
3 June 2022
Assigned by
atlassian
CVSS
9.8 Critical (CVSS 3.1, from CISA-ADP)
CWE-917
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. CISA added it to its list of exploited vulnerabilities.
  2. The CVE record was published.
  3. The US federal deadline to fix it.
  4. Exploit-DB published an exploit (EDB-ID 50952).

Public exploits

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

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