CVE-2023-39470: PaperCut NG print.script.sandboxed Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute…

PriorityP353high7.2CVSS 3.1

AVNACLPRHUINSUCHIHAH

EPSS

1.71%

74.4th percentile

PaperCut NG print.script.sandboxed Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PaperCut NG. Authentication is required to exploit this vulnerability. The specific flaw exists within the management of the print.script.sandboxed setting. The issue results from the exposure of a dangerous function. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-20965.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
papercut	ng	—	—
papercut	papercut_ng	< 22.1.1	22.1.1

Detection & IOCsextracted from sources · hover to see the quote

→The vulnerability involves manipulation of the `print.script.sandboxed` setting in PaperCut NG to expose a dangerous function enabling remote code execution. Monitor for unauthorized changes to this configuration setting. ↗
→Successful exploitation results in code execution as SYSTEM. Alert on PaperCut NG server processes spawning unexpected child processes or running with SYSTEM-level privileges unexpectedly. ↗
→Authentication is required to exploit this vulnerability. Monitor for authenticated sessions in PaperCut NG management interface performing configuration changes to script sandboxing settings, especially from unusual source IPs or accounts. ↗

·The dangerous function exposure is specifically tied to the `print.script.sandboxed` setting. Ensure this setting is not modifiable by non-administrative or untrusted authenticated users, and audit its current value as part of hardening. ↗

CVSS provenance

nvdv3.17.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvdv3.07.2HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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