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CVE-2017-17484

Date: December 10, 2017

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.

Language: C++

Severity Score

Related Resources (9)

https://ssl.icu-project.org/trac/ticket/13510
https://github.com/znc/znc/issues/1459
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://ssl.icu-project.org/trac/ticket/13490
https://ssl.icu-project.org/trac/changeset/40715
https://nvd.nist.gov/vuln/detail/CVE-2017-17484
https://ssl.icu-project.org/trac/changeset/40714
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp
https://www.mend.io/vulnerability-database/CVE-2017-17484

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

CVSS v3.1

Base Score:
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

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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