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CVE-2021-34823

CRITICAL

9.1

Description

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.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published8/13/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

on24:screenshare

Weaknesses (CWE)

CWE-611

References

https://www.trustwave.com/en-us/resources/security-resources/security-advisories/(cve@mitre.org)

https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29105(cve@mitre.org)

https://www.trustwave.com/en-us/resources/security-resources/security-advisories/(af854a3a-2127-422b-91ae-364da2661108)

https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=29105(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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