National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-17484 Detail

Current Description

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.

Source:  MITRE
Description Last Modified:  12/10/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.8 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/znc/znc/issues/1459 Issue Tracking Third Party Advisory
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp Exploit Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40714 Issue Tracking Patch Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40715 Issue Tracking Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13490 Issue Tracking Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13510 Issue Tracking Vendor Advisory

Technical Details

Vulnerability Type (View All)

Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-17484
NVD Published Date:
12/10/2017
NVD Last Modified:
01/23/2018