Wasmtime up to 0.29.x Garbage Collection drop out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Wasmtime up to 0.29.x. It has been rated as critical. Affected by this vulnerability is the function drop of the component Garbage Collection Handler. This manipulation causes out-of-bounds write. This vulnerability is registered as CVE-2021-39218. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Wasmtime up to 0.29.x and classified as critical. Affected by this vulnerability is the function drop of the component Garbage Collection Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 09/18/2021 as 398a73f0dd862dbe703212ebae8e34036a18c11c. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2021-39218 since 08/16/2021. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 0.30.0 eliminates this vulnerability. Applying the patch 398a73f0dd862dbe703212ebae8e34036a18c11c 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.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

Physical: Partially
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 0.30.0
Patch: 398a73f0dd862dbe703212ebae8e34036a18c11c

Timelineinfo

08/16/2021 🔍
09/18/2021 +33 days 🔍
09/18/2021 +0 days 🔍
09/22/2021 +4 days 🔍

Sourcesinfo

Advisory: 398a73f0dd862dbe703212ebae8e34036a18c11c
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-39218 (🔍)
GCVE (CVE): GCVE-0-2021-39218
GCVE (VulDB): GCVE-100-182875

Entryinfo

Created: 09/18/2021 06:46
Updated: 09/22/2021 15:13
Changes: 09/18/2021 06:46 (52), 09/22/2021 15:06 (2), 09/22/2021 15:13 (1)
Complete: 🔍
Cache ID: 216::103

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