CVE-2021-3700

Description

A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.

Category

6.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Third-Party Advisory redhat.com Third-Party Advisory freedesktop.org Third-Party Advisory debian.org
Affected: n/a usbredir
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1992830 issue tracking third party advisory patch
https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba third party advisory patch
https://lists.debian.org/debian-lts-announce/2022/03/msg00030.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-3700?
CVE-2021-3700 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3700?
To fix CVE-2021-3700, 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-2021-3700 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3700 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3700?
CVE-2021-3700 affects n/a usbredir.
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