2.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-41051

CVE-2023-41051: Default functions in VolatileMemory trait lack bounds checks, potentially leading to out-of-bounds memory accesses

Impact

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.

Patches

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.

Workarounds

Not Required

References

https://github.com/rust-vmm/vm-memory/commit/aff1dd4a5259f7deba56692840f7a2d9ca34c9c8 https://crates.io/crates/vm-memory/0.12.2

(GitHub Advisory)

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CVE-2023-41051

CVE-2023-41051:

2.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
vm-memory	rust	< 0.12.2	0.12.2

Technical Details

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Root Cause Analysis

The vulnerability stems from 5 default trait methods in VolatileMemory that consumed get_slice results without length validation. The commit diff shows all these functions received assert_eq! checks in src/volatile_memory.rs to fix the issue. Advisory descriptions explicitly list these functions, and their unsafe pointer operations directly depend on get_slice's contract being upheld. The vulnerability manifests when custom get_slice implementations violate length requirements - the patched version adds missing bounds checks to these specific functions.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

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WAF Rule

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Reasoning

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