CVE-2017-17484

Name: CVE-2017-17484
Creator: NVD / NIST
Published: 2017-12-10T20:29:00.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.61%

Last modified Jun 17, 2026

CVE-2017-17484 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.61% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

4.61%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Icu-Project	International Components For Unicode	<= 60.1

References

https://github.com/znc/znc/issues/1459Issue Tracking, Third Party Advisory
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cppExploit, Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40714Issue Tracking, Patch, Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40715Issue Tracking, Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13490Issue Tracking, Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13510Issue Tracking, Vendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://github.com/znc/znc/issues/1459Issue Tracking, Third Party Advisory
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cppExploit, Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40714Issue Tracking, Patch, Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40715Issue Tracking, Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13490Issue Tracking, Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13510Issue Tracking, Vendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Timeline

Published: Dec 10, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-17484?

How severe is CVE-2017-17484?

Severity scoring for CVE-2017-17484 is pending analysis. The EPSS model estimates a 4.61% probability of exploitation in the next 30 days.

How do I fix CVE-2017-17484?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-17484?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST