CVE-2018-5709
Published: 16 January 2018
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.
Priority
Negligible
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
krb5 Launchpad, Ubuntu, Debian |
Upstream |
Deferred
|
| Ubuntu 20.10 (Groovy Gorilla) |
Needed
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Needed
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Needed
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Needed
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Needed
|
|
| Binaries built from this source package are in Universe and so are supported by the community. | ||
Notes
| Author | Note |
|---|---|
| ebarretto | according to debian security tracker: non-issue, codepath is only run on trusted input, potential integer overflow is non-issue |