CVE-2017-17484

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.

La función ucnv_UTF8FromUTF8 en ucnv_u8.cpp en International Components for Unicode (ICU) para C/C++ hasta la versión 60.1 gestiona de manera incorrecta las llamadas ucnv_convertEx para la conversión UTF-8 a UTF-8. Esto permite que atacantes remotos provoquen una denegación de servicio (desbordamiento de búfer basado en pila y cierre inesperado de la aplicación) o, posiblemente, causen otro impacto sin especificar mediante una cadena manipulada, tal y como demuestra ZNC.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-12-10 CVE Reserved
2017-12-10 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (7)

URL	Tag	Source
https://github.com/znc/znc/issues/1459	Issue Tracking
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	X_refsource_misc

URL	Date	SRC
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp	2024-08-05

URL	Date	SRC
https://ssl.icu-project.org/trac/changeset/40714	2019-04-23

URL	Date	SRC
https://ssl.icu-project.org/trac/changeset/40715	2019-04-23
https://ssl.icu-project.org/trac/ticket/13490	2019-04-23
https://ssl.icu-project.org/trac/ticket/13510	2019-04-23

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Icu-project Search vendor "Icu-project"		International Components For Unicode Search vendor "Icu-project" for product "International Components For Unicode"				<= 60.1 Search vendor "Icu-project" for product "International Components For Unicode" and version " <= 60.1"		c\/c\+\+		Affected