CVE-2016-4356
Published: 29 April 2016
The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.
Priority
Status
Package | Release | Status |
---|---|---|
libksba Launchpad, Ubuntu, Debian |
precise |
Released
(1.2.0-2ubuntu0.2)
|
trusty |
Released
(1.3.0-3ubuntu0.14.04.2)
|
|
upstream |
Released
(1.3.3-1)
|
|
wily |
Not vulnerable
(1.3.3-1)
|
|
xenial |
Not vulnerable
|
|
Patches: upstream: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=243d12fdec66a4360fbb3e307a046b39b5b4ffc3 |
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 |