cve/2017/CVE-2017-17484.md

CVE-2017-17484

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.

POC

Reference

• https://github.com/znc/znc/issues/1459
• https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp
• https://ssl.icu-project.org/trac/changeset/40714
• https://ssl.icu-project.org/trac/changeset/40715
• https://ssl.icu-project.org/trac/ticket/13490
• https://ssl.icu-project.org/trac/ticket/13510

Github

No PoCs found on GitHub currently.