Vyper up to 0.3.7 raw_call control flow

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Vyper up to 0.3.7 and classified as critical. Affected is the function raw_call. Such manipulation leads to control flow. This vulnerability is documented as CVE-2023-30629. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Vyper up to 0.3.7 and classified as critical. Affected by this issue is the function raw_call. The manipulation with an unknown input leads to a control flow vulnerability. Using CWE to declare the problem leads to CWE-670. The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated. Impacted is integrity, and availability. CVE summarizes:

Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions 0.3.1 through 0.3.7, the Vyper compiler generates the wrong bytecode. Any contract that uses the `raw_call` with `revert_on_failure=False` and `max_outsize=0` receives the wrong response from `raw_call`. Depending on the memory garbage, the result can be either `True` or `False`. A patch is available and, as of time of publication, anticipated to be part of Vyper 0.3.8. As a workaround, one may always put `max_outsize>0`.

The weakness was released 04/25/2023 as GHSA-w9g2-3w7p-72g9. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-30629 since 04/13/2023. There are known technical details, but no exploit is available.

Upgrading to version 0.3.8 eliminates this vulnerability. Applying the patch 851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae 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: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
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: Control flow
CWE: CWE-670
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Vyper 0.3.8
Patch: 851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae

Timelineinfo

04/13/2023 🔍
04/25/2023 +12 days 🔍
04/25/2023 +0 days 🔍
04/25/2023 +0 days 🔍

Sourcesinfo

Advisory: GHSA-w9g2-3w7p-72g9
Status: Confirmed

CVE: CVE-2023-30629 (🔍)
GCVE (CVE): GCVE-0-2023-30629
GCVE (VulDB): GCVE-100-227336

Entryinfo

Created: 04/25/2023 06:45
Changes: 04/25/2023 06:45 (51)
Complete: 🔍
Cache ID: 216::103

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