Description
A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | rsync | rsync 3.2.4 | — |
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 | rsync | 3.2.3-3 | — |
| Debian 13 | rsync | 3.2.3-3 | — |
| Debian 12 | rsync | 3.2.3-3 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLES 15 SP2 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLES 15 SP1 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLES for SAP 15 SP2 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLES for SAP 15 SP1 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLE Real Time 15 SP3 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLE Micro 5.2 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLE Micro 5.1 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLE HPC 15 SP3 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLE HPC 15 SP2 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SLE HPC 15 SP1 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SUSE Manager Server 4.2 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SUSE Manager Proxy 4.2 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
| SUSE Enterprise Storage 7.1 | rsync | 3.2.3-150000.4.23.2 | SUSE-RU-2023:3370-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rsync | 3.2.3-2.6 | openSUSE-SU-2024:11308-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | rsync | 3.2.4-r0 | — |
| Alpine v3.14 | rsync | 3.2.4-r0 | — |
| Alpine v3.13 | rsync | 3.2.4-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | rsync | 3.2.3-2 | — |
Advisories 3
- SUSE-RU-2023:3370-1 Recommended update for rsync SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11308-1 rsync-3.2.3-2.6 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1049 Rsync: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · May 7, 2024