Description
The stringprep_utf8_nfkc_normalize function in lib/nfkc.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted UTF-8 data.
References (12)
Core 12
Core References
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/07/21/4
Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/07/20/6
Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/92070
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2016/dsa-3658
Issue Tracking, Patch x_refsource_confirm
http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555
Third Party Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3068-1
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201908-06
Mailing List mailing-list
x_refsource_mlist
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Vendor Advisory mailing-list
x_refsource_mlist
https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html
Mailing List mailing-list
x_refsource_mlist
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
Scores
CVSS v3
7.5
EPSS
0.0200
EPSS Percentile
83.8%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (1)
gnu/libidn
< 1.32
Published
Sep 07, 2016
Tracked Since
Feb 18, 2026