Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.019
EPSS Ranking 82.5%
CVSS Severity
CVSS v3 Score 9.1
CVSS v2 Score 6.4
References
- https://www.trustwave.com/en-us/resources/security-resources/security-advisories/
- https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29105
- https://www.trustwave.com/en-us/resources/security-resources/security-advisories/
- https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29105
Products affected by CVE-2021-34823
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cpe:2.3:a:on24:screenshare:*