Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2016-6261

Published: 21 July 2016

The idna_to_ascii_4i function in lib/idna.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via 64 bytes of input.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
libidn
Launchpad, Ubuntu, Debian
precise
Released (1.23-2ubuntu0.1)
trusty
Released (1.28-1ubuntu2.1)
upstream
Released (1.33-1)
wily Ignored
(end of life)
xenial
Released (1.32-3ubuntu1.1)
yakkety Not vulnerable
(1.33-1)
zesty Not vulnerable
(1.33-1)
Patches:
upstream: http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=f20ce1128fb7f4d33297eee307dddaf0f92ac72d
upstream: http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=11abd0e02c16f9e0b6944aea4ef0f2df44b42dd4
upstream: http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=9a1a7e15d0706634971364493fbb06e77e74726c

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H