CVE-2021-34823

The ON24 ScreenShare (aka DesktopScreenShare.app) plugin before 2.0 for macOS allows remote file access via its built-in HTTP server. This allows unauthenticated remote users to retrieve files accessible to the logged-on macOS user. When a remote user sends a crafted HTTP request to the server, it triggers a code path that will download a configuration file from a specified remote machine over HTTP. There is an XXE flaw in processing of this configuration file that allows reading local (to macOS) files and uploading them to remote machines.
Configurations

Configuration 1

cpe:2.3:a:on24:screenshare:*:*:*:*:*:macos:*:*

Information

Published : 2021-08-13 05:15

Updated : 2021-08-31 02:25


NVD link : CVE-2021-34823

Mitre link : CVE-2021-34823

Products Affected
No products.
CWE
CWE-611

Improper Restriction of XML External Entity Reference