CVE-2020-1914
Facebook Hermes SaveGeneratorLong Logic Vulnerability Execution
Description
A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or theoretically execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.
INFO
Published Date :
Oct. 8, 2020, 7:15 p.m.
Last Modified :
Nov. 21, 2024, 5:11 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Public PoC/Exploit Available at Github
CVE-2020-1914 has a 8 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2020-1914.
| URL | Resource |
|---|---|
| https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc | Patch Third Party Advisory |
| https://www.facebook.com/security/advisories/cve-2020-1914 | Vendor Advisory |
| https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc | Patch Third Party Advisory |
| https://www.facebook.com/security/advisories/cve-2020-1914 | Vendor 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-2020-1914 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-2020-1914
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).
None
Dockerfile Shell Swift JavaScript Python C
None
Dockerfile Shell Swift JavaScript Python C C++
None
Dockerfile Shell Swift JavaScript Python C
None
Dockerfile Shell Swift JavaScript Python C
None
Dockerfile Shell Swift JavaScript Python C
None
Dockerfile Shell OCaml Swift C
None
Dockerfile Shell Swift C JavaScript
A JavaScript Engine Fuzzer
C Swift Shell Dockerfile JavaScript Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-1914 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-1914 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/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc Added Reference https://www.facebook.com/security/advisories/cve-2020-1914 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CWE Facebook, Inc. CWE-1119 -
Initial Analysis by [email protected]
Oct. 20, 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/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc No Types Assigned https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc Patch, Third Party Advisory Changed Reference Type https://www.facebook.com/security/advisories/cve-2020-1914 No Types Assigned https://www.facebook.com/security/advisories/cve-2020-1914 Vendor Advisory Added CWE NIST CWE-670 Added CPE Configuration OR *cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:* versions up to (excluding) 2020-10-01
Vulnerability Scoring Details
Base CVSS Score: 9.8
Base CVSS Score: 7.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.85 }} -1.61%
score
0.72714
percentile