CVE-2020-27221
JDK: Stack-based buffer overflow when converting from UTF-8 characters to platform encoding
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In Eclipse OpenJ9 up to and including version 0.23, there is potential for a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding.
En Eclipse OpenJ9 hasta la versión 0.23 incluyéndola, se presenta un potencial desbordamiento del búfer en la región stack de la memoria cuando la máquina virtual o nativas de JNI están convirtiendo caracteres UTF-8 a la codificación de plataforma
IBM Java SE version 7 Release 1 includes the IBM Java Runtime Environment and the IBM Java Software Development Kit. This update upgrades IBM Java SE 7 to version 7R1 SR4-FP80. Issues addressed include a buffer overflow vulnerability.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-10-19 CVE Reserved
- 2021-01-21 CVE Published
- 2024-08-04 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-121: Stack-based Buffer Overflow
- CWE-787: Out-of-bounds Write
CAPEC
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugs.eclipse.org/bugs/show_bug.cgi?id=569763 | 2021-03-02 | |
| https://access.redhat.com/security/cve/CVE-2020-27221 | 2021-03-04 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1928555 | 2021-03-04 |