Use After Free in Spice-Space Usbredir
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 class: Use-After-Free
EPSS: 0.003 (23.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Spice-space Usbredir
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 34
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
- N/a Usbredir — versions usbredir 0.11.0
Weakness classification (CWE)
References
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3700?
- CVE-2021-3700 is a medium-severity vulnerability in Spice-Space Usbredir, classified under Use After Free. CVSS score: 6.4/10. Published 2022-02-24.
- How severe is CVE-2021-3700?
- Medium severity. CVSS v3 base score is 6.4 out of 10.