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CVE-2024-34340

Cacti authentication bypass

9.1 CRITICALPublic exploitEPSS 1.12%
  1. Published14 May 2024

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Cacti< 1.2.27
Fedoraproject Fedora39

Remediation

Fixed in
Cacti≥ 1.2.27

References

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Frequently asked

Is CVE-2024-34340 being actively exploited?

CVE-2024-34340 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.12%.

How severe is CVE-2024-34340?

CVE-2024-34340 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 1.12% probability of exploitation.

Which products are affected by CVE-2024-34340?

Affected products include Cacti, Fedoraproject Fedora.

How do I fix CVE-2024-34340?

Upgrade affected software to a fixed version, for example Cacti 1.2.27 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-34340 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.