WAVM up to 2018-07-26 WebAssembly Virtual Machine Errors::unreachable input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in WAVM up to 2018-07-26 and classified as problematic. Impacted is the function Errors::unreachable of the component WebAssembly Virtual Machine. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2018-16766. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in WAVM up to 2018-07-26. This affects the function Errors::unreachable of the component WebAssembly Virtual Machine. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of service (application crash) or possibly have unspecified other impact because Errors::unreachable() is reached.

The bug was discovered 07/26/2018. The weakness was disclosed 09/10/2018 (Website). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2018-16766 since 09/09/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 46 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-123781, VDB-123780, VDB-123779 and VDB-123778 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/26/2018 🔍
09/09/2018 +44 days 🔍
09/10/2018 +1 days 🔍
09/10/2018 +0 days 🔍
09/10/2018 +0 days 🔍
05/07/2023 +1700 days 🔍

Sourcesinfo

Advisory: 96
Status: Not defined

CVE: CVE-2018-16766 (🔍)
GCVE (CVE): GCVE-0-2018-16766
GCVE (VulDB): GCVE-100-123777
See also: 🔍

Entryinfo

Created: 09/10/2018 07:34
Updated: 05/07/2023 16:36
Changes: 09/10/2018 07:34 (57), 03/22/2020 08:13 (1), 05/07/2023 16:36 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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