Vulnerability Details : CVE-2021-3700
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.
Vulnerability category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2021-3700
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 11 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-3700
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
4.4
|
MEDIUM | AV:L/AC:M/Au:N/C:P/I:P/A:P |
3.4
|
6.4
|
[email protected] |
|
6.4
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.5
|
5.9
|
[email protected] |
CWE ids for CVE-2021-3700
-
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by:
- [email protected] (Primary)
- [email protected] (Secondary)
References for CVE-2021-3700
-
https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba
Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/03/msg00030.html
Mailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1992830
Issue Tracking;Patch;Third Party Advisory
Products affected by CVE-2021-3700
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:spice-space:usbredir:*:*:*:*:*:*:*:*