Description
The mod_auth_shadow module 1.4 and earlier does not properly enforce the expiration of a user account and password, which could allow remote authenticated users to bypass intended access restrictions.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.0 | mod-auth-shadow | 1.3-3.1woody.1 | DSA-421 |
Advisories 1
- DSA-421 mod-auth-shadow - password expiration Debian Security (DSA / DLA) · Mar 9, 2026