Description
The passprompt plugin in pppd in ppp before 2.5.2 mishandles privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Samba | ppp | < 2.5.2 | 2.5.2 |
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 14 | ppp | 2.5.2-1+1 | — |
| Debian 13 | ppp | 2.5.2-1+1 | — |
| Debian 12 | ppp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | ppp | No fix yet | — |
| Ubuntu 22.04 LTS | ppp | No fix yet | — |
| Ubuntu 20.04 LTS | ppp | No fix yet | — |
| Ubuntu 18.04 LTS | ppp | No fix yet | — |
| Ubuntu 16.04 LTS | ppp | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | ppp | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | ppp +1 | 2.4.5-33.amzn2.0.4 | ALAS2-2025-2867 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | ppp | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | ppp | No fix yet | — |
Advisories 2
- WID-SEC-2025-1381 ZURÜCKGEZOGEN: IGEL OS: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Jul 7, 2025
- ALAS2-2025-2867 Important: ppp security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 29, 2025