Vulnerability · Published Aug 23, 2022 · Assigned by redhat
CVE-2021-3905
High 7.5
In plain English
A high-severity memory leak in openvswitch (ovs). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.1%top 18.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | openvswitch | 2.17.0~git20220105.0d1ffb7-0ubuntu1 | UBUNTU-CVE-2021-3905 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | openvswitch (ovs) | Fixed in v2.17.0 |
Weakness: CWE-401
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2019692
- https://access.redhat.com/security/cve/CVE-2021-3905
- https://ubuntu.com/security/CVE-2021-3905
- https://github.com/openvswitch/ovs-issues/issues/226
- https://github.com/openvswitch/ovs/commit/803ed12e31b0377c37d7aa8c94b3b92f2081e349
- GLSA-202311-16 vendor-advisory