Description
ascii_load_sockaddr in smtpd in OpenBSD before 7.1 errata 024 and 7.2 before errata 020, and OpenSMTPD Portable before 7.0.0-portable commit f748277, can abort upon a connection from a local, scoped IPv6 address.
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 | opensmtpd | 7.3.0p1-1 | — |
| Debian 13 | opensmtpd | 7.3.0p1-1 | — |
| Debian 12 | opensmtpd | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | opensmtpd | No fix yet | — |
| Ubuntu 26.04 LTS | opensmtpd | No fix yet | — |
| Ubuntu 25.10 | opensmtpd | No fix yet | — |
| Ubuntu 24.04 LTS | opensmtpd | No fix yet | — |
| Ubuntu 22.04 LTS | opensmtpd | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | opensmtpd | No fix yet | — |
| Ubuntu 18.04 LTS | opensmtpd | No fix yet | — |
| Ubuntu Pro 16.04 LTS | opensmtpd | No fix yet | — |
| Ubuntu Pro 14.04 LTS | opensmtpd | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | opensmtpd | 6.8.0p2-11.amzn2023.0.1 | ALAS2023-2023-221 |
Advisories 2
- WID-SEC-2023-0848 OpenBSD OpenSMTPD: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Mar 26, 2024
- ALAS2023-2023-221 Moderate: opensmtpd security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 27, 2023
References
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/020_smtpd.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.1/common/024_smtpd.patch.sig
- https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff?r1=1.49&r2=1.49.4.1&f=h
- https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff?r1=1.50&r2=1.50.4.1&f=h
- https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/smtpd/envelope.c.diff?r1=1.50&r2=1.51&f=h
- https://github.com/OpenSMTPD/OpenSMTPD/commit/41d0eae481f538956b1f1fbadfb535043454061f
- https://github.com/openbsd/src/commit/f748277ed1fc7065ae8998d61ed78b9ab1e55fae
- https://security.netapp.com/advisory/ntap-20230526-0006/
- FEDORA-2024-28fde3feb7 vendor-advisory