CVE-2017-17484
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.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- 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
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html