CVE-2020-15091
TenderMint Block Signature Spoofing Vulnerability
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.
INFO
Published Date :
July 2, 2020, 5:15 p.m.
Last Modified :
Nov. 21, 2024, 5:04 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-15091.
| URL | Resource |
|---|---|
| https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340 | Patch Third Party Advisory |
| https://github.com/tendermint/tendermint/issues/4926 | Exploit Issue Tracking Third Party Advisory |
| 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 |
| https://github.com/tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3 | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-15091 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-15091
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-15091 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-15091 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340 Added Reference https://github.com/tendermint/tendermint/issues/4926 Added Reference https://github.com/tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 08, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340 No Types Assigned https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340 Patch, Third Party Advisory Changed Reference Type https://github.com/tendermint/tendermint/issues/4926 No Types Assigned https://github.com/tendermint/tendermint/issues/4926 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3 No Types Assigned https://github.com/tendermint/tendermint/security/advisories/GHSA-6jqj-f58p-mrw3 Exploit, Third Party Advisory Added CWE NIST CWE-347 Added CPE Configuration OR *cpe:2.3:a:tendermint:tendermint:*:*:*:*:*:*:*:* versions from (including) 0.33.0 up to (excluding) 0.33.6 -
CVE Modified by [email protected]
Jul. 02, 2020
Action Type Old Value New Value Changed 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. 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.
Vulnerability Scoring Details
Base CVSS Score: 6.5
Base CVSS Score: 4
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.02%
score
0.32774
percentile