gsd-2020-15091
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (**without changing chainID**). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-15091",
"description": "TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (**without changing chainID**). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit.",
"id": "GSD-2020-15091"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-15091"
],
"details": "TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (**without changing chainID**). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit.",
"id": "GSD-2020-15091",
"modified": "2023-12-13T01:21:43.209965Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2020-15091",
"STATE": "PUBLIC",
"TITLE": "Denial of Service in TenderMint"
},
"affects": {
"vendor": {
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{
"product": {
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{
"product_name": "tendermint",
"version": {
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"version_value": "\u003e= 0.33.0, \u003c 0.33.6"
}
]
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}
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"value": "TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (**without changing chainID**). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"lang": "eng",
"value": "{\"CWE-347\":\"Improper Verification of Cryptographic Signature\"}"
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{
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{
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"source": {
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"discovery": "UNKNOWN"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003e=0.33.0 \u003c0.33.6",
"affected_versions": "All versions starting from 0.33.0 before 0.33.6",
"cvss_v2": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"cwe_ids": [
"CWE-1035",
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"CWE-937"
],
"date": "2021-12-20",
"description": "TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (**without changing chainID**). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit.",
"fixed_versions": [
"0.33.6"
],
"identifier": "CVE-2020-15091",
"identifiers": [
"GHSA-6jqj-f58p-mrw3",
"CVE-2020-15091"
],
"not_impacted": "All versions before 0.33.0, all versions starting from 0.33.6",
"package_slug": "go/github.com/tendermint/tendermint",
"pubdate": "2021-12-20",
"solution": "Upgrade to version 0.33.6 or above.",
"title": "Improper Verification of Cryptographic Signature",
"urls": [
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"https://github.com/tendermint/tendermint/issues/4926",
"https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340",
"https://github.com/advisories/GHSA-6jqj-f58p-mrw3"
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"uuid": "616bac53-0f25-49b2-b08a-4d7c8ce01d2d"
}
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},
"nvd.nist.gov": {
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"nodes": [
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"cpe_match": [
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"cpe_name": [],
"versionEndExcluding": "0.33.6",
"versionStartIncluding": "0.33.0",
"vulnerable": true
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"operator": "OR"
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"problemtype": {
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.0,
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"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
"version": "2.0"
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"impactScore": 2.9,
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"exploitabilityScore": 2.8,
"impactScore": 3.6
}
},
"lastModifiedDate": "2020-07-08T19:16Z",
"publishedDate": "2020-07-02T17:15Z"
}
}
}
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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.
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