cbcvebase.
CVE-2023-4568
published 2023-09-13

CVE-2023-4568: PaperCut NG allows for unauthenticated XMLRPC commands to be run by default. Versions 22.0.12 and below are confirmed to be affected, but later versions may…

PriorityP351medium6.5CVSS 3.1
AVNACLPRNUINSUCLILAN
EXPLOIT
EPSS
3.57%
87.9th percentile
PaperCut NG allows for unauthenticated XMLRPC commands to be run by default. Versions 22.0.12 and below are confirmed to be affected, but later versions may also be affected due to lack of a vendor supplied patch.

Affected

1 ranges
VendorProductVersion rangeFixed in
papercutpapercut_ng<= 22.0.12—

Detection & IOCsextracted from sources · hover to see the quote

url/rpc/clients/xmlrpc↗
  • →Detect unauthenticated POST requests to the PaperCut NG XMLRPC endpoint at /rpc/clients/xmlrpc with Content-Type: text/xml and no authentication headers. ↗
  • →A successful exploitation response will contain both 'conf.ssl-port' and 'conf.auth-ttl-default' in the response body with HTTP 200 and Content-Type: text/xml. ↗
  • →Use Shodan queries to identify exposed PaperCut NG instances: html:"content=\"PaperCut\"" or http.html:'content="papercut' ↗
  • →Use FOFA queries to identify exposed PaperCut NG instances: body='content="papercut' ↗
  • →The XMLRPC payload invokes 'client.getGlobalConfig' with string arguments, which is the method abused to leak configuration data without authentication. ↗
  • ·Versions 22.0.12 and below are confirmed affected, but later versions may also be vulnerable as no vendor patch was available at time of disclosure. ↗
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