CVE-2020-15254
Crossbeam-channel Incorrect `Vec` Capacity Handling Buffer Overflow
Description
Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4.
INFO
Published Date :
Oct. 16, 2020, 5:15 p.m.
Last Modified :
Aug. 5, 2022, 7:30 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
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-2020-15254.
| URL | Resource |
|---|---|
| https://github.com/RustSec/advisory-db/pull/425 | Patch Third Party Advisory |
| https://github.com/crossbeam-rs/crossbeam/issues/539 | Exploit Third Party Advisory |
| https://github.com/crossbeam-rs/crossbeam/pull/533 | Exploit Patch Third Party Advisory |
| https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx | 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-2020-15254 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-15254 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Aug. 05, 2022
Action Type Old Value New Value Added CWE NIST CWE-401 -
Initial Analysis by [email protected]
Oct. 28, 2020
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/crossbeam-rs/crossbeam/issues/539 No Types Assigned https://github.com/crossbeam-rs/crossbeam/issues/539 Exploit, Third Party Advisory Changed Reference Type https://github.com/crossbeam-rs/crossbeam/pull/533 No Types Assigned https://github.com/crossbeam-rs/crossbeam/pull/533 Exploit, Patch, Third Party Advisory Changed Reference Type https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx No Types Assigned https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx Third Party Advisory Changed Reference Type https://github.com/RustSec/advisory-db/pull/425 No Types Assigned https://github.com/RustSec/advisory-db/pull/425 Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:crossbeam_project:crossbeam:*:*:*:*:*:*:*:* versions up to (excluding) 0.4.4 -
CVE Modified by [email protected]
Oct. 16, 2020
Action Type Old Value New Value Changed Description Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4. Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-15254 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-2020-15254
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.70 }} 0.10%
score
0.80375
percentile