CVE-2015-8630
Published: 13 February 2016
The (1) kadm5_create_principal_3 and (2) kadm5_modify_principal functions in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.4 and 1.14.x before 1.14.1 allow remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by specifying KADM5_POLICY with a NULL policy name.
From the Ubuntu Security Team
It was discovered that Kerberos incorrectly handled policy names. A remote authenticated attacker could possibly use this issue to cause a denial of service.
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced in 1.12 |
| ratliff | use of kadmind is not supported in touch and core |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
krb5 Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
| bionic |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| cosmic |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| precise |
Not vulnerable
(1.10+dfsg~beta1-2ubuntu0.7)
|
|
| trusty |
Released
(1.12+dfsg-2ubuntu5.4)
|
|
| upstream |
Released
(1.14+dfsg-1)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Not vulnerable
(1.13.2+dfsg-5)
|
|
| yakkety |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| zesty |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
|
Patches: upstream: https://github.com/krb5/krb5/commit/b863de7fbf080b15e347a736fdda0a82d42f4f6b |
||
| Binaries built from this source package are in Universe and so are supported by the community. | ||
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 |