Administrative page alteration via unescaped group prefix
Published Jan 19, 2022 · Updated Aug 3, 2024
Stored HTML injection in Cacti 1.1.38 allows remote authenticated users with User Management permission to alter administrative pages. The user_group_admin.php Copy path bypasses input validation, stores group_prefix content, and renders it without HTML escaping on the deletion view. Exploitation requires User Management permission and a later visit to the affected group view; demonstrated impact is persistent markup injection.
Summary
What happened
Stored HTML injection in Cacti 1.1.38 allows remote authenticated users with User Management permission to alter administrative pages. The user_group_admin.php Copy path bypasses input validation, stores group_prefix content, and renders it without HTML escaping on the deletion view. Exploitation requires User Management permission and a later visit to the affected group view; demonstrated impact is persistent markup injection.
The record
- CVE
- CVE-2021-3816
- Published
- Jan 19, 2022
- Updated
- Aug 3, 2024
- Vendor
- The Cacti Group
- Product
- Cacti
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.1.38
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Group-prefix HTML injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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