High severity · published Sep 29, 2022
CVE-2022-36066
Discourse vulnerable to RCE via admins uploading maliciously zipped file
7.2
CVSS
2.1%
EPSS
No
On KEV
Description
Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution. The problem is patched in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
< 2.8.9; >= 2.9.0.beta0, < 2.9.0.beta10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-36066
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-36066
Patch
https://github.com/discourse/discourse/commit/b27d5626d208a22c516a0adfda7554b67b493835
Patch
https://github.com/discourse/discourse/pull/18421
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-grvh-qcpg-hfmv
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