Description
A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't exist PAM try to authenticate with root and in the case of an empty password it successfully authenticate.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | pam | pam 1.5.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pam | 1.5.2-1.1 | openSUSE-SU-2024:11140-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.23 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.22 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.21 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.20 | linux-pam | 1.5.1-r0 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.18 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.17 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.16 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.15 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.14 | linux-pam | 1.5.1-r0 | — |
| Alpine v3.13 | linux-pam | 1.5.1 | — |
Advisories 1
- openSUSE-SU-2024:11140-1 pam-1.5.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026