CVE-2021-29511
EVM Denial-of-Service Memory Allocation Vulnerability
Description
evm is a pure Rust implementation of Ethereum Virtual Machine. Prior to the patch, when executing specific EVM opcodes related to memory operations that use `evm_core::Memory::copy_large`, the `evm` crate can over-allocate memory when it is not needed, making it possible for an attacker to perform denial-of-service attack. The flaw was corrected in commit `19ade85`. Users should upgrade to `==0.21.1, ==0.23.1, ==0.24.1, ==0.25.1, >=0.26.1`. There are no workarounds. Please upgrade your `evm` crate version.
INFO
Published Date :
May 12, 2021, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 6:01 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2021-29511.
| URL | Resource |
|---|---|
| https://crates.io/crates/evm | Third Party Advisory |
| https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd | Patch Third Party Advisory |
| https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388 | Patch Third Party Advisory |
| https://crates.io/crates/evm | Third Party Advisory |
| https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd | Patch Third Party Advisory |
| https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388 | Patch 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-2021-29511 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-29511 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://crates.io/crates/evm Added Reference https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd Added Reference https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Oct. 25, 2022
Action Type Old Value New Value Added CWE NIST CWE-787 -
Initial Analysis by [email protected]
May. 21, 2021
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://crates.io/crates/evm No Types Assigned https://crates.io/crates/evm Third Party Advisory Changed Reference Type https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd No Types Assigned https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd Patch, Third Party Advisory Changed Reference Type https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388 No Types Assigned https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388 Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:evm_project:evm:*:*:*:*:*:rust:*:* versions up to (including) 0.21.0 *cpe:2.3:a:evm_project:evm:0.22.0:*:*:*:*:rust:*:* *cpe:2.3:a:evm_project:evm:0.23.0:*:*:*:*:rust:*:* *cpe:2.3:a:evm_project:evm:0.24.0:*:*:*:*:rust:*:* *cpe:2.3:a:evm_project:evm:0.25.0:*:*:*:*:rust:*:* *cpe:2.3:a:evm_project:evm:0.26.0:*:*:*:*:rust:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-29511 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-2021-29511
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.38 }} -0.07%
score
0.56244
percentile