GHSA-4873-36H9-WV49 Out-of-bounds read/write and invalid free with `externref`s and GC safepoints in Wasmtime

Impact There was an invalid free and out-of-bounds read and write bug when running Wasm that uses externrefs in Wasmtime. To trigger this bug, Wasmtime needs to be running Wasm that uses externrefs, the host creates non-null externrefs, Wasmtime performs a garbage collection GC, and there has to ...

auto-wasi (0.1.0), ceres-executor (>=0.1.0, <=0.2.0) +36 more potentially affected by CVE-2021-39216 +2 more via wasmtime (>=0.7.0, <=0.29.0)

wasmtime CARGO version =0.7.0, =0.1.0, =0.1.0, =0.8.0-alpha.2, =0.8.0-alpha.2, =0.1.1, =0.1.1, =0.1.2, =0.1.4 and more Source cves: CVE-2021-39216, CVE-2021-39218, CVE-2021-39219 Source advisory: OSV:GHSA-V4CP-H94R-M7XF...

GHSA-V4CP-H94R-M7XF Use after free passing `externref`s to Wasm in Wasmtime

Impact There was a use-after-free bug when passing externrefs from the host to guest Wasm content. To trigger the bug, you have to explicitly pass multiple externrefs from the host to a Wasm instance at the same time, either by passing multiple externrefs as arguments from host code to a Wasm...

Use after free passing `externref`s to Wasm in Wasmtime

Impact There was a use-after-free bug when passing externrefs from the host to guest Wasm content. To trigger the bug, you have to explicitly pass multiple externrefs from the host to a Wasm instance at the same time, either by passing multiple externrefs as arguments from host code to a Wasm...

CVE-2021-39216

Wasmtime is an open source runtime for WebAssembly & WASI. In Wasmtime from version 0.19.0 and before version 0.30.0 there was a use-after-free bug when passing externrefs from the host to guest Wasm content. To trigger the bug, you have to explicitly pass multiple externrefs from the host to a...

PYSEC-2021-320

Wasmtime is an open source runtime for WebAssembly & WASI. In Wasmtime from version 0.19.0 and before version 0.30.0 there was a use-after-free bug when passing externrefs from the host to guest Wasm content. To trigger the bug, you have to explicitly pass multiple externrefs from the host to a...

CVE-2021-32629

Cranelift is an open-source code generator maintained by Bytecode Alliance. It translates a target-independent intermediate representation into executable machine code. There is a bug in 0.73 of the Cranelift x64 backend that can create a scenario that could result in a potential sandbox escape i...

CVE-2021-32629

Cranelift is an open-source code generator maintained by Bytecode Alliance. It translates a target-independent intermediate representation into executable machine code. There is a bug in 0.73 of the Cranelift x64 backend that can create a scenario that could result in a potential sandbox escape i...

Heap overflow

Cranelift is an open-source code generator maintained by Bytecode Alliance. It translates a target-independent intermediate representation into executable machine code. There is a bug in 0.73 of the Cranelift x64 backend that can create a scenario that could result in a potential sandbox escape i...

PYSEC-2021-87

Cranelift is an open-source code generator maintained by Bytecode Alliance. It translates a target-independent intermediate representation into executable machine code. There is a bug in 0.73 of the Cranelift x64 backend that can create a scenario that could result in a potential sandbox escape i...

PYSEC-2021-87

Cranelift is an open-source code generator maintained by Bytecode Alliance. It translates a target-independent intermediate representation into executable machine code. There is a bug in 0.73 of the Cranelift x64 backend that can create a scenario that could result in a potential sandbox escape i...

CVE-2021-32629

Cranelift’s x64 backend bug in 0.73 (and certain earlier builds when the new backend is explicitly selected) can sign-extend a loaded i32 value, potentially enabling sandbox escapes in Wasm modules and exposing memory up to 2 GiB before the heap. Wasmtime and Lucet using Cranelift may be exploita...

CVE-2021-32629 Memory access due to code generation flaw in Cranelift module

Cranelift is an open-source code generator maintained by Bytecode Alliance. It translates a target-independent intermediate representation into executable machine code. There is a bug in 0.73 of the Cranelift x64 backend that can create a scenario that could result in a potential sandbox escape i...

Exploit for Improper Input Validation in Google Chrome

PoC exploit for CVE-2020-16040, an out-of-bounds read vulnerability in the WebAssembly WASM module loader. The exploit targets the WASM module loader's handling of WebAssembly code, specifically the wasmcode array, which is used to load and execute WASM modules. The vulnerability allows an attack...

CVE-2021-23970

Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox 86...

CVE-2021-23970

Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox 86...

CVE-2021-23970

Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox 86...

CVE-2021-23970

CVE-2021-23970 affects Mozilla Firefox prior to version 86. The issue arises from context-specific code included in a shared jump table, triggering assertions in multithreaded WebAssembly code. Affected product: Firefox (older than 86). Root cause: shared jump-table context-specific code leading ...

Multithreaded WASM Triggered Assertions

firefox has Multithreaded WASM triggered assertions validating separation of script domains...

Mozilla Firefox < 86.0

The version of Firefox installed on the remote Windows host is prior to 86.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-07 advisory. - Mozilla developers Tyson Smith, Lars T Hansen, Valentin Gosu, and Sebastian Hengst reported memory safety bugs present ...