CVE-2017-15088
Published: 23 November 2017
plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
krb5 Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
| bionic |
Not vulnerable
(1.16-2build1)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(1.15.2-2, 1.17)
|
|
| zesty |
Ignored
(end of life)
|
|
| impish |
Not vulnerable
(1.18.3-6)
|
|
| groovy |
Not vulnerable
(1.17-6ubuntu4)
|
|
| hirsute |
Not vulnerable
(1.17-6ubuntu4)
|
|
| xenial |
Released
(1.13.2+dfsg-5ubuntu2.2+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| cosmic |
Not vulnerable
(1.16-2build1)
|
|
| disco |
Not vulnerable
(1.16-2build1)
|
|
| kinetic |
Not vulnerable
(1.19.2-2)
|
|
| lunar |
Not vulnerable
(1.19.2-2)
|
|
| eoan |
Not vulnerable
(1.16-2build1)
|
|
| focal |
Not vulnerable
(1.17-6ubuntu4)
|
|
| jammy |
Not vulnerable
(1.19.2-2)
|
|
| mantic |
Not vulnerable
(1.19.2-2)
|
|
|
Patches: upstream: https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4 |
||
| Binaries built from this source package are in Universe and so are supported by the community. | ||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |