CRITICAL
Insufficient sanitization of environment variables passed to rsync can bypass the restrictions imposed by rssh, a restricted shell that should restrict users to perform only rsync operations, resulting in the execution of arbitrary shell commands
Published Feb 6, 2019
9.8
CRITICALCVSS 3.1
EPSS 4.70%
Description
Insufficient sanitization of environment variables passed to rsync can bypass the restrictions imposed by rssh, a restricted shell that should restrict users to perform only rsync operations, resulting in the execution of arbitrary shell commands.
Affected products
-
- Version All versions before 2.3.4-5+deb9u2 and 2.3.4-10StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Debian GNU/Linux | Rssh | n/a |
|
Configuration 1
- 2.3.4
Configuration 2
OR
- 8.0
- 9.0
Configuration 3
OR
- 29
- 30
- 31
Configuration 4
OR
- 14.04
- 16.04
- 18.04
- 18.10
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.70% 0.04699
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04699
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (31 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.70% (0.04699) | 91.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.83% (0.04829) | 90.81th | v5 (v2026.06.15) |
| May 29, 2026 | 5.64% (0.05640) | 90.48th | v4 (v2025.03.14) |
| May 25, 2026 | 8.55% (0.08552) | 92.50th | v4 (v2025.03.14) |
| Dec 28, 2025 | 10.61% (0.10612) | 93.03th | v4 (v2025.03.14) |
| Dec 27, 2025 | 6.94% (0.06939) | 91.15th | v4 (v2025.03.14) |
| Nov 21, 2025 | 10.79% (0.10792) | 93.04th | v4 (v2025.03.14) |
| Nov 18, 2025 | 12.03% (0.12025) | 93.09th | v4 (v2025.03.14) |
| Oct 28, 2025 | 10.79% (0.10792) | 92.99th | v4 (v2025.03.14) |
| Oct 27, 2025 | 7.06% (0.07062) | 91.11th | v4 (v2025.03.14) |
| Oct 1, 2025 | 10.79% (0.10792) | 93.11th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.93% (0.07932) | 91.24th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.37% (0.12365) | 89.78th | v4 (v2025.03.14) |
| Mar 25, 2025 | 7.93% (0.07932) | 91.19th | v4 (v2025.03.14) |
| Mar 19, 2025 | 4.67% (0.04672) | 88.02th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.74% (0.02742) | 85.01th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.04% (0.03044) | 90.76th | v3 (v2023.03.01) |
| Dec 12, 2024 | 0.94% (0.00937) | 83.73th | v3 (v2023.03.01) |
| Jun 29, 2024 | 1.93% (0.01929) | 88.73th | v3 (v2023.03.01) |
| Jan 31, 2024 | 1.91% (0.01911) | 87.36th | v3 (v2023.03.01) |
| Nov 8, 2023 | 1.25% (0.01251) | 83.96th | v3 (v2023.03.01) |
| Sep 3, 2023 | 1.91% (0.01906) | 87.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.42% (0.01421) | 84.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.81% (0.03806) | 85.56th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.81% (0.03806) | 84.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 25.29% (0.25288) | 95.51th | v2 (v2022.01.01) |
| Feb 3, 2022 | 15.53% (0.15532) | 90.08th | v1 |
| Jan 6, 2022 | 15.53% (0.15532) | 89.96th | v1 |
| Jan 5, 2022 | 3.94% (0.03937) | 83.58th | v5 (v2026.06.15) |
| May 27, 2021 | 3.94% (0.03937) | 0.00th | v1 |
| Apr 14, 2021 | 3.59% (0.03590) | 0.00th | v1 |
Weaknesses (1)
References (10)
- http://seclists.org/fulldisclosure/2021/May/78 mailing-listx_refsource_FULLDISCMailing ListNot ApplicableThird Party Advisory
- http://www.securityfocus.com/bid/106839 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://lists.debian.org/debian-lts-announce/2019/02/msg00007.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HO3MDU3AH5SLYBKHH5PJ6PHC63ASIF42/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KR2OHTHMJVV4DO3HDRFQQZ5JENHDJQEN/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T42YYNWJZG422GATWAHAEK4A24OKY557/ vendor-advisoryx_refsource_FEDORA
- https://security.gentoo.org/glsa/202007-29 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://tracker.debian.org/news/1026713/accepted-rssh-234-5deb9u2-source-amd64-into-stable-embargoed-stable/ x_refsource_MISCMailing ListThird Party Advisory
- https://usn.ubuntu.com/3946-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.debian.org/security/2019/dsa-4382 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner debian
Published Feb 6, 2019
Updated Sep 17, 2024
Reserved Dec 31, 2018
Link CVE-2019-3464
CISA Vulnrichment
Updated n/a