idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
La función idn2_to_ascii_4i en la biblioteca lib/lookup.c en GNU libidn2 versiones anteriores a 2.1.1, presenta un desbordamiento del búfer en la región heap de la memoria por medio de una cadena de dominio larga.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Availability Impact | HIGH |
AV:N/AC:L/Au:N/C:P/I:P/A:P
| Access Vector | NETWORK |
|---|---|
| Access Complexity | LOW |
| Authentication | NONE |
| Confidentiality Impact | PARTIAL |
| Integrity Impact | PARTIAL |
| Availability Impact | PARTIAL |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-787
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| gnu | libidn2 | * | <built-in method update of dict object at 0x7fd319c76b80> | Application |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:gnu:libidn2:*:*:*:*:*:*:*:* |