Wazuh Vulnerability Scanner strange behavior on upgrade Packages stay on unsolved

[No Data]

Hello everyone,

We are currently observing some strange behavior in the vulnerability scanner. CVEs are only marked as Solved when the affected packages are uninstalled. However, when a package is upgraded, it is not marked as solved.

The inventory (IT hygiene) correctly shows the newly installed package. According to the vendor’s errata, this is a fixed version. Nevertheless, the vulnerability scanner still lists it as Unsolved.

A test involving the uninstallation of packages confirmed that such cases are detected correctly.

Attached are two screenshots illustrating the situation — both SUSE (SLES 12/15) and Red Hat (8/9) systems in our environment are affected.

According to Red Hat, the fixed version is installed:
https://access.redhat.com/errata/RHSA-2024:1436

The package details in the inventory confirm this.



However, the vulnerability details still list the system as vulnerable — interestingly, the package has been installed longer than the vulnerability has been detected. In other words, the vulnerability has been known for some time but was only recently flagged by the scanner, even though the fixed version is already in place.



Something about this seems quite odd.

I also noticed that the vulnerability scanner details are missing information about the fixed version. In the past, before CTI, this information was always shown. I believe including this would be quite useful.

i'm confused, any help will be welcome?

with best regards

[Ifeanyi Onyia Odike]

Hi @ata...@tutanota.com

Your query is acknowledged.

Let me get back to you on this.

Regards

[Rafael Gomez]

Same here. I’m dealing with other kinds of the same false positive. It’s driving me crazy.

Rafael Gómez
+34 644 668 229

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[Ifeanyi Onyia Odike]

Hello 

To resolve this query, I will itemize the three issues you have observed and provide responses:

• Patched packages are not marked as “Solved.” The scanner only resolves CVEs when the vulnerable package is uninstalled, not when it’s upgraded.

Answer: This is strange and shouldn't work like that. Could you confirm that you restarted your Wazuh agent after upgrading the package? The vulnerability detector needs to perform another scan on the Wazuh agent after packages are updated to patched versions.

• The System Inventory shows correct (fixed/upgraded) versions, but the vulnerability scanner still flags them as vulnerable.

Answer: That's an important part. The scanner is working as expected. Could you confirm that the old vulnerability does not appear in the inventory dashboard while we investigate this further?

• I also noticed that the vulnerability scanner details are missing information about the fixed version. In the past, before CTI, this information was always shown. I believe including this would be quite useful.

Answer: Could you please share more details about the exact field you are referring to/missing?

[app...@proton.me]

Question: This is strange and shouldn't work like that. Could you confirm that you restarted your Wazuh agent after upgrading the package? The vulnerability detector needs to perform another scan on the Wazuh agent after packages are updated to patched versions.

yes the agents restarted.

Question: That's an important part. The scanner is working as expected. Could you confirm that the old vulnerability does not appear in the inventory dashboard while we investigate this further?

Yes, only one version is visible in the Inventory Dashboard. What’s strange is that the package.installed column is empty here. However, the Vulnerability Report does show an installation date. I checked the installation directly on the server, and the package is installed. No duplicate packages. . Removed Package on the affected Servers are marked as solved in the last days.

Question: Could you please share more details about the exact field you are referring to/missing?

  In the old days, before CTI was used as a source for the Vulnerability Scanner (NVD and vendor ERRATA), the Red Hat errata data at least included a field with the fixed version. That field no longer exists today, which makes filtering for false positives more difficult. Now, it’s always necessary to check directly on the vendor’s website.  

[Ifeanyi Onyia Odike]

Hi 

This is the related behavior for the first question.

"If the changes are made to packages while the Wazuh agent is in a stopped state, no alerts will be triggered. Also, if these changes are only detected after the Wazuh agent is restarted, no alert will be triggered."

I will get back to you with a reply about the third question.

Regards,