CVE-2021-39167
OpenZepplin TimelockController Privilege Escalation Vulnerability
Description
OpenZepplin is a library for smart contract development. In affected versions a vulnerability in TimelockController allowed an actor with the executor role to escalate privileges. Further details about the vulnerability will be disclosed at a later date. As a workaround revoke the executor role from accounts not strictly under the team's control. We recommend revoking all executors that are not also proposers. When applying this mitigation, ensure there is at least one proposer and executor remaining.
INFO
Published Date :
Aug. 27, 2021, 12:15 a.m.
Last Modified :
Nov. 21, 2024, 6:18 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
6.0
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-39167
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-39167.
| URL | Resource |
|---|---|
| https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431 | Patch Release Notes Third Party Advisory |
| https://github.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5 | Patch Third Party Advisory |
| https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-fg47-3c2x-m2wr | Third Party Advisory |
| https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431 | Patch Release Notes Third Party Advisory |
| https://github.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5 | Patch Third Party Advisory |
| https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-fg47-3c2x-m2wr | Third Party Advisory |
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-2021-39167 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-39167 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/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431 Added Reference https://github.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5 Added Reference https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-fg47-3c2x-m2wr -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 01, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431 No Types Assigned https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431 Patch, Release Notes, Third Party Advisory Changed Reference Type https://github.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5 No Types Assigned https://github.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5 Patch, Third Party Advisory Changed Reference Type https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-fg47-3c2x-m2wr No Types Assigned https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-fg47-3c2x-m2wr Third Party Advisory Added CWE NIST CWE-269 Added CPE Configuration OR *cpe:2.3:a:openzeppelin:contracts:*:*:*:*:*:node.js:*:* versions from (including) 3.3.0 up to (excluding) 3.4.2 *cpe:2.3:a:openzeppelin:contracts:*:*:*:*:*:node.js:*:* versions from (including) 4.0.0 up to (excluding) 4.3.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-39167 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-2021-39167
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.34 }} 0.09%
score
0.70912
percentile