CVE-2017-17484

HIGH

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.

References

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

Details

Source: MITRE

Published: 2017-12-10

Updated: 2019-04-23

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL