CVE-2021-32744

Unauthenticated attacker could gain access to currently open files

Description

Collabora Online is a collaborative online office suite. In versions prior to 4.2.17-1 and version 6.4.9-5, unauthenticated attackers are able to gain access to files which are currently opened by other users in the Collabora Online editor. For successful exploitation the attacker is required to guess the file identifier - the predictability of this file identifier is dependent on external file-storage implementations (this is a potential "IDOR" - Insecure Direct Object Reference - vulnerability). Versions 4.2.17-1 and 6.4.9-5 contain patches for this issue. There is no known workaround except updating the Collabora Online application to one of the patched releases.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.57%
Third-Party Advisory github.com
Affected: CollaboraOnline online
Published at:
Updated at:

References

Link Tags
https://github.com/CollaboraOnline/online/security/advisories/GHSA-32xj-9x82-q9jw third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-32744?
CVE-2021-32744 has been scored as a critical severity vulnerability.
How to fix CVE-2021-32744?
To fix CVE-2021-32744, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32744 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-32744 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32744?
CVE-2021-32744 affects CollaboraOnline online.
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