Bug 2280480 (CVE-2024-34340)

Summary: CVE-2024-34340 cacti: authentication bypass when using older password hashes
Product: [Other] Security Response Reporter: Robb Gatica <rgatica>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Fixed In Version: cacti 1.2.27 Doc Type: If docs needed, set a value
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Bug Depends On: 2280481, 2280482    
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Description Robb Gatica 2024-05-15 00:03:46 UTC 
Cacti provides an operational monitoring and fault management framework. Prior to version 1.2.27, Cacti calls `compat_password_hash` when users set their password. `compat_password_hash` use `password_hash` if there is it, else use `md5`. When verifying password, it calls `compat_password_verify`. In `compat_password_verify`, `password_verify` is called if there is it, else use `md5`. `password_verify` and `password_hash` are supported on PHP < 5.5.0, following PHP manual. The vulnerability is in `compat_password_verify`. Md5-hashed user input is compared with correct password in database by `$md5 == $hash`. It is a loose comparison, not `===`. It is a type juggling vulnerability. Version 1.2.27 contains a patch for the issue.

https://github.com/Cacti/cacti/security/advisories/GHSA-37x7-mfjv-mm7m
Comment 1 Robb Gatica 2024-05-15 00:04:02 UTC 
Created cacti tracking bugs for this issue:

Affects: epel-all [bug 2280481]
Affects: fedora-all [bug 2280482]