The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://ssl.icu-project.org/trac/ticket/13490
- https://ssl.icu-project.org/trac/changeset/40714
- https://github.com/znc/znc/issues/1459
- https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp
- https://ssl.icu-project.org/trac/ticket/13510
- https://ssl.icu-project.org/trac/changeset/40715
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
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Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.