CVE-2017-17484

CRITICAL

International Components for Unicode < 60.1 - Stack-Based Buffer Overflow in ucnv_UTF8FromUTF8

Title source: llm
STIX 2.1

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.

References (7)

Core 7
Core References
Issue Tracking, Vendor Advisory x_refsource_misc
https://ssl.icu-project.org/trac/ticket/13490
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://ssl.icu-project.org/trac/changeset/40714
Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/znc/znc/issues/1459
Exploit, Vendor Advisory x_refsource_misc
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp
Issue Tracking, Vendor Advisory x_refsource_misc
https://ssl.icu-project.org/trac/ticket/13510
Issue Tracking, Vendor Advisory x_refsource_misc
https://ssl.icu-project.org/trac/changeset/40715

Scores

CVSS v3 9.8
EPSS 0.0461
EPSS Percentile 90.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (1)
icu-project/international_components_for_unicode < 60.1
Published Dec 10, 2017
Tracked Since Feb 18, 2026