Medium severity · published Dec 24, 2020
CVE-2020-35659
The DNS query log in Pi-hole before 5.2.2 is vulnerable to stored XSS
6.1
CVSS
1%
EPSS
No
On KEV
Description
The DNS query log in Pi-hole before 5.2.2 is vulnerable to stored XSS. An attacker with the ability to directly or indirectly query DNS with a malicious hostname can cause arbitrary JavaScript to execute when the Pi-hole administrator visits the Query Log or Long-term data Query Log page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PI
Pi-hole · Pi-hole
before 5.2.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35659
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35659
Third Party Advisory
https://blog.mirch.io/2020/12/24/pihole-xss/
Release Notes
https://discourse.pi-hole.net/t/pi-hole-core-web-v5-2-2-and-ftl-v5-3-3-released/41998
Patch
https://github.com/pi-hole/AdminLTE/pull/1665
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