CVE-2020-15091
CVSS V2 Medium 4
CVSS V3 Medium 6.5
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.
Overview
- CVE ID
- CVE-2020-15091
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-07-02T17:15:12
- Last Modified Date
- 2020-07-08T19:16:14
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:tendermint:tendermint:*:*:*:*:*:*:*:* | 1 | OR | 0.33.0 | 0.33.6 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3 | Exploit Third Party Advisory |
| https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340 | Patch Third Party Advisory |
| https://github.com/tendermint/tendermint/issues/4926 | Exploit Issue Tracking Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-15091 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15091 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:41:14 | Added to TrackCVE | |||
| 2022-12-04 19:08:20 | 2020-07-02T17:15Z | 2020-07-02T17:15:12 | CVE Published Date | updated |
| 2022-12-04 19:08:20 | 2020-07-08T19:16:14 | CVE Modified Date | updated | |
| 2022-12-04 19:08:20 | Analyzed | Vulnerability Status | updated |