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.

CVSS v3.0

9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

4.61% chance of exploitation in the next 30 days, 91th percentile

Published

2017-12-10

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp

References

• CVE Record
• NVD entry

Related

• CVE-2017-17475
• CVE-2017-17485
• CVE-2017-17474
• CVE-2017-17537
• CVE-2017-17473
• CVE-2017-17538