CVE-2015-8629
Published: 13 February 2016
The xdr_nullstring function in lib/kadm5/kadm_rpc_xdr.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 does not verify whether '\0' characters exist as expected, which allows remote authenticated users to obtain sensitive information or cause a denial of service (out-of-bounds read) via a crafted string.
From the Ubuntu Security Team
It was discovered that Kerberos incorrectly handled input strings. A remote authenticated attacker could possibly use this issue to obtain sensitive information or cause a denial of service.
Notes
| Author | Note |
|---|---|
| ratliff | use of kadmind by touch and core is not supported |
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)
|
|
| disco |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| eoan |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| focal |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| groovy |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| hirsute |
Not vulnerable
(1.14.3+dfsg-2ubuntu1)
|
|
| precise |
Ignored
(end of life)
|
|
| 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/df17a1224a3406f57477bcd372c61e04c0e5a5bb |
||
| Binaries built from this source package are in Universe and so are supported by the community. | ||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |