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CVE-2023-41051 Detail

Description

In a typical Virtual Machine Monitor (VMM) there are several components, such as boot loader, virtual device drivers, virtio backend drivers and vhost drivers, that need to access the VM physical memory. The vm-memory rust crate provides a set of traits to decouple VM memory consumers from VM memory providers. An issue was discovered in the default implementations of the `VolatileMemory::{get_atomic_ref, aligned_as_ref, aligned_as_mut, get_ref, get_array_ref}` trait functions, which allows out-of-bounds memory access if the `VolatileMemory::get_slice` function returns a `VolatileSlice` whose length is less than the function’s `count` argument. No implementations of `get_slice` provided in `vm_memory` are affected. Users of custom `VolatileMemory` implementations may be impacted if the custom implementation does not adhere to `get_slice`'s documentation. The issue started in version 0.1.0 but was fixed in version 0.12.2 by inserting a check that verifies that the `VolatileSlice` returned by `get_slice` is of the correct length. Users are advised to upgrade. There are no known workarounds for this issue.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://crates.io/crates/vm-memory/0.12.2 Product 
https://github.com/rust-vmm/vm-memory/commit/aff1dd4a5259f7deba56692840f7a2d9ca34c9c8 Patch 
https://github.com/rust-vmm/vm-memory/security/advisories/GHSA-49hh-fprx-m68g Vendor Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPXRXD5VXBZHBGMUM77B52CJJMG7EJGI/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SYM6CYW2DWRHRAVL2HYTQPXC3J2V77J4/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XZGJL6BQLU4XCPQLLTW4GSSBTNQXB3TI/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST   GitHub, Inc.  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-41051
NVD Published Date:
09/01/2023
NVD Last Modified:
09/27/2023
Source:
GitHub, Inc.