CVE-2025-15412
Description
A flaw was found in wabt. A local user can exploit an out-of-bounds read vulnerability by manipulating the wabt::Decompiler::VarName function within the wasm-decompile component. This can lead to information disclosure, denial of service, and potentially arbitrary code execution.
Statement
This vulnerability is rated Moderate which exists in the wasm-decompile utility of the wabt package and requires local access to exploit. An attacker with local access could provide a specially crafted WebAssembly binary to the wasm-decompile tool, leading to an out-of-bounds read. This issue affects components like wabt in Fedora and firefox, thunderbird in Red Hat Enterprise Linux.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
An attacker could get secret values such as cryptographic keys, PII, memory addresses, or other information that could be used in additional attacks.
Confidentiality
Technical Impact: Bypass Protection Mechanism
Out-of-bounds memory could contain memory addresses or other information that can be used to bypass ASLR and other protection mechanisms in order to improve the reliability of exploiting a separate weakness for code execution.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker could cause a segmentation fault or crash by causing memory to be read outside of the bounds of the buffer. This is especially likely when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string.
Other
Technical Impact: Varies by Context
The read operation could produce other undefined or unexpected results.
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