CVE-2023-274773.1LowCWE-193

CVE-2023-27477: bytecodealliance wasmtime vulnerability

bytecodealliance · wasmtime

Affected: bytecodealliance wasmtime · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.6%probability of exploitation in the next 30 days

50th percentile

050100

Higher than 50% of scored CVEs

3.1LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's code generation backend, Cranelift, has a bug on x86_64 platforms for the WebAssembly `i8x16.select` instruction which will produce the wrong results when the same operand is provided to the instruction and some of the selected indices are greater than 16. There is an off-by-one error in the calculation of the mask to the `pshufb` instruction which causes incorrect results to be returned if lanes are selected from the second vector. This codegen bug has been fixed in Wasmtiem 6.0.1, 5.0.1, and 4.0.1. Users are recommended to upgrade to these updated versions. If upgrading is not an option for you at this time, you can avoid this miscompilation by disabling the Wasm simd proposal. Additionally the bug is only present on x86_64 hosts. Other platforms such as AArch64 and s390x are not affected.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

bytecodealliance · wasmtimecranelift-codegen: >= 0.88.0, < 0.91.1; cranelift-codegen: >= 0.92.0, < 0.92.1; cranelift-codegen: >= 0.93.0, < 0.93.1; wasmtime: >= 0.37.0, < 4.0.1; wasmtime: >= 5.0.0, < 5.0.1; wasmtime: >= 6.0.0, < 6.0.1

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Off-by-one Error · Memory Corruption
Vendor: bytecodealliance
Published: March 2023
Band: Unlikely (under 1%), March 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-27477 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.