CVE-2021-3700
Last modified
CVE-2021-3700 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Spice-Space | Usbredir | < 0.11.0 |
| Redhat | Enterprise Linux | 6.0 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 9.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1992830Issue Tracking, Patch, Third Party Advisory
- https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831baPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00030.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1992830Issue Tracking, Patch, Third Party Advisory
- https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831baPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00030.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3700?
How severe is CVE-2021-3700?
How do I fix CVE-2021-3700?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-36994There is a issue that trustlist strings being repeatedly ins…3.7
- CVE-2021-36995There is an Unauthorized file access vulnerability in Huawei…7.5
- CVE-2021-36996There is an Improper verification vulnerability in Huawei Sm…5.3
- CVE-2021-36997There is a Low memory error in Huawei Smartphone due to the …5.3
- CVE-2021-36998There is an Improper verification vulnerability in Huawei Sm…5.3
- CVE-2021-36999There is a Buffer overflow vulnerability in Huawei Smartphon…7.8
- CVE-2021-37000Some Huawei wearables have a permission management vulnerabi…7.8
- CVE-2021-37001There is a Register tampering vulnerability in Huawei Smartp…7.5
- CVE-2021-37002There is a Memory out-of-bounds access vulnerability in Huaw…9.8
- CVE-2021-37003There is a Improper Input Validation vulnerability in Huawei…7.5
- CVE-2021-37004There is a Improper Input Validation vulnerability in Huawei…7.5
- CVE-2021-37005There is a Improper Input Validation vulnerability in Huawei…7.5
Are you affected by CVE-2021-3700?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST