Vulnerability Details : CVE-2020-27173
In vm-superio before 0.1.1, the serial console FIFO can grow to unlimited memory usage when data is sent to the input source (i.e., standard input). This behavior cannot be reproduced from the guest side. When no rate limiting is in place, the host can be subject to memory pressure, impacting all other VMs running on the same host.
Exploit prediction scoring system (EPSS) score for CVE-2020-27173
Probability of exploitation activity in the next 30 days: 0.11%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 42 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-27173
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-27173
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27173
-
https://github.com/rust-vmm/vm-superio/pull/19
Fix for #17 - v0.1.1_release branch by andreeaflorescu · Pull Request #19 · rust-vmm/vm-superio · GitHubPatch;Third Party Advisory
-
https://github.com/rust-vmm/vm-superio/issues/17
Implementation of the serial console may allocate an unbounded amount of memory · Issue #17 · rust-vmm/vm-superio · GitHubThird Party Advisory
Products affected by CVE-2020-27173
- cpe:2.3:a:vm-superio_project:vm-superio:*:*:*:*:*:*:*:*