Wasmtime up to 2.0.1 C API wasmtime/trap.h out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Wasmtime up to 2.0.1. This affects some unknown processing in the library wasmtime/trap.h of the component C API. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's C API implementation where the definition of the `wasmtime_trap_code` does not match its declared signature in the `wasmtime/trap.h` header file. This discrepancy causes the function implementation to perform a 4-byte write into a 1-byte buffer provided by the caller. This can lead to three zero bytes being written beyond the 1-byte location provided by the caller. This bug has been patched and users should upgrade to Wasmtime 2.0.2. This bug can be worked around by providing a 4-byte buffer casted to a 1-byte buffer when calling `wasmtime_trap_code`. Users of the `wasmtime` crate are not affected by this issue, only users of the C API function `wasmtime_trap_code` are affected.

The weakness was shared 11/11/2022 as GHSA-h84q-m8rr-3v9q. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-39394 since 09/02/2022. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 2.0.2 eliminates this vulnerability. Applying the patch 087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The entries VDB-153607, VDB-158373, VDB-168361 and VDB-168363 are related to this item.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.8
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 3.8
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Wasmtime 2.0.2
Patch: 087d9d7becf7422b3f872a3bcd5d97bb7ce7ff36

Timelineinfo

09/02/2022 🔍
11/11/2022 +70 days 🔍
11/11/2022 +0 days 🔍
11/11/2022 +0 days 🔍

Sourcesinfo

Advisory: GHSA-h84q-m8rr-3v9q
Status: Confirmed

CVE: CVE-2022-39394 (🔍)
See also: 🔍

Entryinfo

Created: 11/11/2022 07:29
Changes: 11/11/2022 07:29 (53)
Complete: 🔍
Cache ID: 3:837:103

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