CVE-2018-18920
CVSS V2 Medium 6.8
CVSS V3 High 8.8
Description
Py-EVM v0.2.0-alpha.33 allows attackers to make a vm.execute_bytecode call that triggers computation._stack.values with '"stack": [100, 100, 0]' where b'\x' was expected, resulting in an execution failure because of an invalid opcode. This is reportedly related to "smart contracts can be executed indefinitely without gas being paid."
Overview
- CVE ID
- CVE-2018-18920
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2018-11-12T02:29:00
- Last Modified Date
- 2019-02-04T13:31:03
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:ethereum:py-evm:0.2.0:alpha.33:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.reddit.com/r/ethereum/comments/9vkk2g/netta_labs_claim_to_have_found_a_vulnerability_in/e9d3wyx/ | Third Party Advisory |
| https://twitter.com/NettaLab/status/1060889400102383617 | Third Party Advisory |
| https://twitter.com/AlexanderFisher/status/1060923428641878019 | Third Party Advisory |
| https://github.com/ethereum/py-evm/issues/1448 | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-18920 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18920 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:59:33 | Added to TrackCVE | |||
| 2022-12-03 14:15:43 | 2018-11-12T02:29Z | 2018-11-12T02:29:00 | CVE Published Date | updated |
| 2022-12-03 14:15:43 | 2019-02-04T13:31:03 | CVE Modified Date | updated | |
| 2022-12-03 14:15:43 | Analyzed | Vulnerability Status | updated |