CVE-2020-14387
A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-14387- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-297
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-14387- Weakness
- CWE-297
- Updated
- 2026-11-02
EUVDEUVD-2020-6527 No score
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.
- Record
EUVD-2020-6527- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5gm2-c485-9q6q No score
A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate...
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.
- Record
GHSA-5gm2-c485-9q6q- Weakness
- CWE-297
- Updated
- 2026-11-02
OSVALPINE-CVE-2020-14387
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.
- Record
ALPINE-CVE-2020-14387- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVAZL-7462
CVE-2020-14387 affecting package rsync for versions less than 3.2.3-2
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.
- Record
AZL-7462- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
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OSVBELL-CVE-2020-14387
CVE-2020-14387 does not affect BellSoft software
- Record
BELL-CVE-2020-14387- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSV
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.
- Record
CVE-2020-14387- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-14387
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.
- Record
DEBIAN-CVE-2020-14387- CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11308-1 No score
rsync-3.2.3-2.6 on GA media
These are all security issues fixed in the rsync-3.2.3-2.6 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11308-1- Updated
- 2026-11-02
OSVSUSE-RU-2023:3370-1 No score
Recommended update for rsync
This update for rsync fixes the following issues:
- Update to version 3.2.3 (jsc#SLE-21252, jsc#PED-3146)
- Add support for using --atimes to preserve atime of files in destination sync (jsc#PED-3145)
- Remove SuSEfirewall2 service as this was replaced by firewalld (which already provides a rsyncd service).
- Fix --delay-updates never updates after interruption (bsc#1204538)
- Arbitrary file write vulnerability via do_server_recv function (bsc#1201840, CVE-2022-29154)
- rsync-ssl: Verify the hostname in the certificate when using openssl. (bsc#1176160, CVE-2020-14387)
- Record
SUSE-RU-2023:3370-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
rsyncAlpine:v3.13 |
3.2.1 up to 3.2.4-r0 | 3.2.4-r0 |
rsyncAlpine:v3.14 |
3.2.1 up to 3.2.4-r0 | 3.2.4-r0 |
rsyncAlpine:v3.15 |
3.2.1 up to 3.2.4-r0 | 3.2.4-r0 |
rsyncAzure Linux:2 |
before 3.2.3-2 | 3.2.3-2 |
rsyncDebian:12 |
before 3.2.3-3 | 3.2.3-3 |
rsyncDebian:13 |
before 3.2.3-3 | 3.2.3-3 |
rsyncDebian:14 |
before 3.2.3-3 | 3.2.3-3 |
rsyncSUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
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| Package | Affected | Fixed |
|---|---|---|
rsyncSUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Real Time 15 SP3 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Server 15 SP1-LTSS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Server 15 SP2-LTSS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Server 15 SP3-LTSS From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Server for SAP Applications 15 SP1 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Server for SAP Applications 15 SP2 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Server for SAP Applications 15 SP3 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Manager Proxy 4.2 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Manager Server 4.2 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Micro 5.1 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Linux Enterprise Micro 5.2 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncSUSE:Enterprise Storage 7.1 From an advisory covering 2 CVEs |
before 3.2.3-150000.4.23.2 | 3.2.3-150000.4.23.2 |
rsyncopenSUSE:Tumbleweed From an advisory covering 5 CVEs |
before 3.2.3-2.6 | 3.2.3-2.6 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-14387 is a high vulnerability (CVSS 7.4) in Samba Rsync, published May 27, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 66th percentile. Fixed in rsync 3.2.4-r0.
References
bugzilla.redhat.com/show_bug.cgi?id=1875549
nvd.nist.gov/vuln/detail/CVE-2020-14387
github.com/advisories/GHSA-5gm2-c485-9q6q
security.alpinelinux.org/vuln/CVE-2020-14387
docs.bell-sw.com/security/cves/CVE-2020-14387
security-tracker.debian.org/tracker/CVE-2020-14387
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suse.com/support/update/announcement/-2023-3370/suse-ru-20233370-1
bugzilla.suse.com/1176160