CVE-2017-17484

NameCVE-2017-17484
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
icu (PTS)wheezy4.8.1.1-12+deb7u3fixed
wheezy (security)4.8.1.1-12+deb7u7fixed
jessie52.1-8+deb8u6vulnerable
jessie (security)52.1-8+deb8u5vulnerable
stretch57.1-6+deb9u1vulnerable
buster, sid57.1-8vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
icusource(unstable)(unfixed)high
icusourceexperimental60.2-1high
icusourcewheezy(not affected)

Notes

[wheezy] - icu <not-affected> (Vulnerable code not present)
https://ssl.icu-project.org/trac/ticket/13510
https://ssl.icu-project.org/trac/ticket/13490
Fixed by: https://ssl.icu-project.org/trac/changeset/40714
Testcase: https://ssl.icu-project.org/trac/changeset/40715
POC: https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.2.cpp
Likely introduced by: https://ssl.icu-project.org/trac/changeset/40455/trunk/icu4c/source/common/ucnv_u8.cpp

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