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GHSA-g4v2-cjqp-rfmq
No affected components available
Summary
A use-after-free vulnerability has been discovered in the linear memory implementation of Wasmi. This issue can be triggered by a WebAssembly module under certain memory growth conditions, potentially leading to memory corruption, information disclosure, or code execution.
Impact
- Confidentiality: High – attacker-controlled memory reads possible.
- Integrity: High – memory corruption may allow arbitrary writes.
- Availability: High – interpreter crashes possible.
Affected Versions
Wasmi v0.41.0 through Wasmi v1.0.0.
Workarounds
- Upgrade to the latest patched version of Wasmi.
- Consider limiting the maximum linear memory sizes where feasible.
Credits
This vulnerability was discovered by Robert T. Morris (RTM).
The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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