gsd-2020-26241
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth's pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-26241",
"description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17.",
"id": "GSD-2020-26241"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-26241"
],
"details": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17.",
"id": "GSD-2020-26241",
"modified": "2023-12-13T01:22:08.709513Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2020-26241",
"STATE": "PUBLIC",
"TITLE": "Shallow copy bug in geth"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "go-ethereum",
"version": {
"version_data": [
{
"version_value": "\u003e= 1.9.7, \u003c 1.9.17"
}
]
}
}
]
},
"vendor_name": "ethereum"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-682: Incorrect Calculation"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://blog.ethereum.org/2020/11/12/geth_security_release/",
"refsource": "MISC",
"url": "https://blog.ethereum.org/2020/11/12/geth_security_release/"
},
{
"name": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf",
"refsource": "CONFIRM",
"url": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf"
}
]
},
"source": {
"advisory": "GHSA-69v6-xc2j-r2jf",
"discovery": "UNKNOWN"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003cv1.9.17",
"affected_versions": "All versions before 1.9.17",
"cvss_v2": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"cwe_ids": [
"CWE-1035",
"CWE-682",
"CWE-937"
],
"date": "2020-12-03",
"description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at `0x00..0x04`) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls `0x00..0x04` with R as an argument, then overwrites R to Y, and finally invokes the `RETURNDATACOPY` opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed ",
"fixed_versions": [
"v1.9.17"
],
"identifier": "CVE-2020-26241",
"identifiers": [
"CVE-2020-26241",
"GHSA-69v6-xc2j-r2jf"
],
"not_impacted": "All versions starting from 1.9.17",
"package_slug": "go/github.com/ethereum/go-ethereum",
"pubdate": "2020-11-25",
"solution": "Upgrade to version 1.9.17 or above.",
"title": "Incorrect Calculation",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-26241",
"https://blog.ethereum.org/2020/11/12/geth_security_release/"
],
"uuid": "7e6f1574-e262-43e0-ba6e-b08c571f0b16",
"versions": [
{
"commit": {
"sha": "748f22c192d24082723f935afd0b0b63e7fd50f4",
"tags": [
"v1.9.17"
],
"timestamp": "20200720125642"
},
"number": "v1.9.17"
}
]
},
{
"affected_range": "\u003cv1.9.17",
"affected_versions": "All versions before 1.9.17",
"cvss_v2": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"cwe_ids": [
"CWE-1035",
"CWE-682",
"CWE-937"
],
"date": "2020-12-03",
"description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at `0x00..0x04`) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls `0x00..0x04` with R as an argument, then overwrites R to Y, and finally invokes the `RETURNDATACOPY` opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed ",
"fixed_versions": [
"v1.9.17"
],
"identifier": "CVE-2020-26241",
"identifiers": [
"CVE-2020-26241",
"GHSA-69v6-xc2j-r2jf"
],
"not_impacted": "All versions starting from 1.9.17",
"package_slug": "go/github.com/ethereum/go-ethereum/cmd/evm",
"pubdate": "2020-11-25",
"solution": "Upgrade to version 1.9.17 or above.",
"title": "Incorrect Calculation",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-26241",
"https://blog.ethereum.org/2020/11/12/geth_security_release/"
],
"uuid": "45d1ae5d-cea5-4a11-9f80-5937a425461d",
"versions": [
{
"commit": {
"sha": "748f22c192d24082723f935afd0b0b63e7fd50f4",
"tags": [
"v1.9.17"
],
"timestamp": "20200720125642"
},
"number": "v1.9.17"
}
]
},
{
"affected_range": "\u003c1.19.7",
"affected_versions": "All versions before 1.19.7",
"cvss_v2": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"cwe_ids": [
"CWE-1035",
"CWE-682",
"CWE-937"
],
"date": "2021-06-29",
"description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17.",
"fixed_versions": [
"1.19.7"
],
"identifier": "CVE-2020-26241",
"identifiers": [
"GHSA-69v6-xc2j-r2jf",
"CVE-2020-26241"
],
"not_impacted": "All versions starting from 1.19.7",
"package_slug": "go/github.com/ethereum/go-ethereum/core/vm",
"pubdate": "2021-06-29",
"solution": "Upgrade to version 1.19.7 or above.",
"title": "Incorrect Calculation",
"urls": [
"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf",
"https://nvd.nist.gov/vuln/detail/CVE-2020-26241",
"https://github.com/ethereum/go-ethereum/commit/295693759e5ded05fec0b2fb39359965b60da785",
"https://github.com/advisories/GHSA-69v6-xc2j-r2jf"
],
"uuid": "7dbe9922-bc4c-4519-9a4c-1ef59b969fe8"
},
{
"affected_range": "\u003cv1.9.17",
"affected_versions": "All versions before 1.9.17",
"cvss_v2": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"cwe_ids": [
"CWE-1035",
"CWE-682",
"CWE-937"
],
"date": "2020-12-03",
"description": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at `0x00..0x04`) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls `0x00..0x04` with R as an argument, then overwrites R to Y, and finally invokes the `RETURNDATACOPY` opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed ",
"fixed_versions": [
"v1.9.17"
],
"identifier": "CVE-2020-26241",
"identifiers": [
"CVE-2020-26241",
"GHSA-69v6-xc2j-r2jf"
],
"not_impacted": "All versions starting from 1.9.17",
"package_slug": "go/github.com/ethereum/go-ethereum/eth",
"pubdate": "2020-11-25",
"solution": "Upgrade to version 1.9.17 or above.",
"title": "Incorrect Calculation",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-26241",
"https://blog.ethereum.org/2020/11/12/geth_security_release/"
],
"uuid": "31d8cd3e-eef3-481a-b355-f76b07af6bc4",
"versions": [
{
"commit": {
"sha": "748f22c192d24082723f935afd0b0b63e7fd50f4",
"tags": [
"v1.9.17"
],
"timestamp": "20200720125642"
},
"number": "v1.9.17"
}
]
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:ethereum:go_ethereum:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "1.9.17",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2020-26241"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. This is a Consensus vulnerability in Geth before version 1.9.17 which can be used to cause a chain-split where vulnerable nodes reject the canonical chain. Geth\u0027s pre-compiled dataCopy (at 0x00...04) contract did a shallow copy on invocation. An attacker could deploy a contract that writes X to an EVM memory region R, then calls 0x00..04 with R as an argument, then overwrites R to Y, and finally invokes the RETURNDATACOPY opcode. When this contract is invoked, a consensus-compliant node would push X on the EVM stack, whereas Geth would push Y. This is fixed in version 1.9.17."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-682"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf",
"refsource": "CONFIRM",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-69v6-xc2j-r2jf"
},
{
"name": "https://blog.ethereum.org/2020/11/12/geth_security_release/",
"refsource": "MISC",
"tags": [
"Vendor Advisory"
],
"url": "https://blog.ethereum.org/2020/11/12/geth_security_release/"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.5,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 4.2
}
},
"lastModifiedDate": "2020-12-03T15:48Z",
"publishedDate": "2020-11-25T02:15Z"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…