Vulnerability · Published Feb 24, 2022 · Assigned by redhat
CVE-2021-3700
Medium 6.4
In plain English
A medium-severity use-after-free in usbredir. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.4Medium
Exploit odds (30 days)0.3%top 75.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | usbredir | 0.12.0-r0 | ALPINE-CVE-2021-3700 |
| Alpine:v3.21 | usbredir | 0.12.0-r0 | ALPINE-CVE-2021-3700 |
| Alpine:v3.22 | usbredir | 0.12.0-r0 | ALPINE-CVE-2021-3700 |
| Alpine:v3.23 | usbredir | 0.12.0-r0 | ALPINE-CVE-2021-3700 |
| Alpine:v3.24 | usbredir | 0.12.0-r0 | ALPINE-CVE-2021-3700 |
| Debian:12 | usbredir | 0.11.0-1 | DEBIAN-CVE-2021-3700 |
| Debian:13 | usbredir | 0.11.0-1 | DEBIAN-CVE-2021-3700 |
| Debian:14 | usbredir | 0.11.0-1 | DEBIAN-CVE-2021-3700 |
Affected products (as reported)
Weakness: CWE-416
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1992830 x_refsource_MISC
- https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba x_refsource_MISC
- [debian-lts-announce] 20220320 [SECURITY] [DLA 2958-1] usbredir security update mailing-list, x_refsource_MLIST