CVE-2024-28247: pi-hole Information Disclosure

Description

The Pi-hole is a DNS sinkhole that protects your devices from unwanted content without installing any client-side software. A vulnerability has been discovered in Pihole that allows an authenticated user on the platform to read internal server files arbitrarily, and because the application runs from behind, reading files is done as a privileged user.If the URL that is in the list of "Adslists" begins with "file*" it is understood that it is updating from a local file, on the other hand if it does not begin with "file*" depending on the state of the response it does one thing or another. The problem resides in the update through local files. When updating from a file which contains non-domain lines, 5 of the non-domain lines are printed on the screen, so if you provide it with any file on the server which contains non-domain lines it will print them on the screen. This vulnerability is fixed by 5.18.

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CVSS v3.1 Score

7.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Weakness Type (CWE)

CWE-200 CWE-200

CWE-269 CWE-269

Affected Products

Vendor	Product	Versions
pi-hole	pi-hole	< 5.18

References

Advisories & Patches

https://github.com/pi-hole/pi-hole/commit/f3af03174e676c20e502a92ed7842159f2fdeb7e https://github.com/pi-hole/pi-hole/security/advisories/GHSA-95g6-7q26-mp9x https://github.com/pi-hole/pi-hole/commit/f3af03174e676c20e502a92ed7842159f2fdeb7e https://github.com/pi-hole/pi-hole/security/advisories/GHSA-95g6-7q26-mp9x

Exploits

https://github.com/pi-hole/pi-hole/security/advisories/GHSA-95g6-7q26-mp9x https://github.com/pi-hole/pi-hole/security/advisories/GHSA-95g6-7q26-mp9x

Frequently Asked Questions

What is CVE-2024-28247? +

The Pi-hole is a DNS sinkhole that protects your devices from unwanted content without installing any client-side software. A vulnerability has been discovered in Pihole that allows an authenticated user on the platform to read internal server files arbitrarily, and because the application runs from behind, reading files is done as a privileged user.If the URL that is in the list of "Adslists" begins with "file*" it is understood that it is updating from a local file, on the other hand if it does not begin with "file*" depending on the state of the response it does one thing or another. The problem resides in the update through local files. When updating from a file which contains non-domain lines, 5 of the non-domain lines are printed on the screen, so if you provide it with any file on the server which contains non-domain lines it will print them on the screen. This vulnerability is fixed by 5.18. It has a CVSS v3.1 base score of 7.6 (HIGH).

How severe is CVE-2024-28247? +

CVE-2024-28247 has a CVSS v3.1 score of 7.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-28247? +

CVE-2024-28247 affects products from pi-hole, specifically: pi-hole. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-28247? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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