Atlassian Confluence Data Center/Confluence Server 7.19.17/8.4.5 Template injection

Summaryinfo

A vulnerability has been found in Atlassian Confluence Data Center and Confluence Server and classified as very critical. This issue affects some unknown processing of the component Template Handler. This manipulation causes injection. This vulnerability is handled as CVE-2023-22527. The attack can be initiated remotely. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Atlassian Confluence Data Center and Confluence Server and classified as very critical. Affected by this vulnerability is an unknown part of the component Template Handler. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Summary of Vulnerability A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action. Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin. See “What You Need to Do” for detailed instructions. {panel:bgColor=#deebff} 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. {panel} Affected Versions ||Product||Affected Versions|| |Confluence Data Center and Server| 8.0.x 8.1.x 8.2.x 8.3.x 8.4.x 8.5.0 8.5.1 8.5.2 8.5.3| Fixed Versions ||Product||Fixed Versions|| |Confluence Data Center and Server|8.5.4 (LTS)| |Confluence Data Center| 8.6.0 or later (Data Center Only) 8.7.1 or later (Data Center Only)| What You Need To Do Immediately patch to a fixed version Atlassian recommends that you patch each of your affected installations to the latest version. The listed Fixed Versions are no longer the most up-to-date versions and do not protect your instance from other non-critical vulnerabilities as outlined in Atlassian’s January Security Bulletin. ||Product||Fixed Versions||Latest Versions|| |Confluence Data Center and Server| 8.5.4 (LTS)| 8.5.5 (LTS) |Confluence Data Center| 8.6.0 or later (Data Center Only) 8.7.1 or later (Data Center Only)| 8.6.3 or later (Data Center Only) 8.7.2 or later (Data Center Only) For additional details, please see full advisory.

The weakness was released 01/16/2024. It is possible to read the advisory at confluence.atlassian.com. This vulnerability is known as CVE-2023-22527 since 01/01/2023. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/29/2024). The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

It is possible to download the exploit at packetstormsecurity.com. It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 01/24/2024 with a due date of 02/14/2024:

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

Upgrading to version 8.5.4 eliminates this vulnerability.

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Productinfo

Vendor

• Atlassian

Name

• Confluence Data Center
• Confluence Server

Version

• 7.19.17
• 8.4.5

License

• free

Website

• Vendor: https://www.atlassian.com/

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