PT-2021-11811 · Pi-Hole · Pi-Hole

N4Nj0 · Published 2021-02-18 · Updated 2021-02-24 · CVE-2020-35592

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Pi-hole versions 5.0 through 5.1.1

Description: The issue allows a remote user to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data, achieving a Reflected Cross-Site Scripting attack against other users and potentially stealing the session cookie. This is done via the Options header to the "admin/" URI.

Recommendations: For versions 5.0 through 5.1.1, consider disabling access to the "admin/" URI until a patch is available to prevent exploitation. Restrict the use of the Options header in the admin/ URI to minimize the risk of Reflected Cross-Site Scripting attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-35592

Affected Products

Pi-Hole

References · 6

• 🔥 https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i · Exploit
• https://discourse.pi-hole.net/c/announcements/5 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-35592 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35592 · Security Note
• https://t.me/cvenotify/10435 · Telegram Post
• https://t.me/cibsecurity/23832 · Telegram Post