CVE-2016-4356
Published: June 13, 2016Last modified: November 9, 2023
Description
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.
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 |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libksba | Not affected (1.6.4-r0) |
| Stream | libksba | Not affected (1.6.4-r0) |
References
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=243d12fdec66a4360fbb3e307a046b39b5b4ffc3
- http://www.openwall.com/lists/oss-security/2016/04/29/5
- http://www.openwall.com/lists/oss-security/2016/04/29/8
- http://www.openwall.com/lists/oss-security/2016/05/10/3
- http://www.ubuntu.com/usn/USN-2982-1
- https://security.gentoo.org/glsa/201604-04