pam_krb5 2.2.14 through 2.3.4, as used in Red Hat Enterprise Linux (RHEL) 5, generates different password prompts depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Enterprise_linux | Redhat | 5 (including) | 5 (including) |
| Red Hat Enterprise Linux 5 | RedHat | pam_krb5-0:2.2.14-15 | * |
| Libpam-krb5 | Ubuntu | artful | * |
| Libpam-krb5 | Ubuntu | cosmic | * |
| Libpam-krb5 | Ubuntu | dapper | * |
| Libpam-krb5 | Ubuntu | disco | * |
| Libpam-krb5 | Ubuntu | hardy | * |
| Libpam-krb5 | Ubuntu | intrepid | * |
| Libpam-krb5 | Ubuntu | jaunty | * |
| Libpam-krb5 | Ubuntu | karmic | * |
| Libpam-krb5 | Ubuntu | lucid | * |
| Libpam-krb5 | Ubuntu | maverick | * |
| Libpam-krb5 | Ubuntu | natty | * |
| Libpam-krb5 | Ubuntu | oneiric | * |
| Libpam-krb5 | Ubuntu | precise | * |
| Libpam-krb5 | Ubuntu | quantal | * |
| Libpam-krb5 | Ubuntu | raring | * |
| Libpam-krb5 | Ubuntu | saucy | * |
| Libpam-krb5 | Ubuntu | trusty | * |
| Libpam-krb5 | Ubuntu | utopic | * |
| Libpam-krb5 | Ubuntu | vivid | * |
| Libpam-krb5 | Ubuntu | wily | * |
| Libpam-krb5 | Ubuntu | yakkety | * |
| Libpam-krb5 | Ubuntu | zesty | * |