Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service (/etc/passwd corruption) via a newline character in the GECOS field.
| Software | From | Fixed in |
|---|---|---|
| redhat / libuser | 0.60-3 | 0.60-3.x |
| redhat / libuser | - | 0.56.13-5.x |
| redhat / libuser | 0.60-1 | 0.60-1.x |
| redhat / libuser | 0.60-6 | 0.60-6.x |
| redhat / libuser | 0.60-2 | 0.60-2.x |
| redhat / libuser | 0.60-5 | 0.60-5.x |
| redhat / libuser | 0.60-4 | 0.60-4.x |