Description
rssh version 2.3.4 contains a CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in allowscp permission that can result in Local command execution. This attack appear to be exploitable via An authorized SSH user with the allowscp permission.
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 9 | rssh | 2.3.4-5+deb9u1 | DSA-4377-1 |
| Debian 8 | rssh | 2.3.4-4+deb8u1 | DLA-1650-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | rssh | 2.3.4-7ubuntu0.1 | USN-3946-1 |
| Ubuntu 16.04 LTS | rssh | 2.3.4-4+deb8u2ubuntu0.16.04.2 | USN-3946-1 |
| Ubuntu 14.04 LTS | rssh | 2.3.4-4+deb8u2ubuntu0.14.04.2 | USN-3946-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.22 | rssh | 2.3.4-r2 | — |
| Alpine v3.21 | rssh | 2.3.4-r2 | — |
| Alpine v3.20 | rssh | 2.3.4-r2 | — |
| Alpine v3.19 | rssh | 2.3.4-r2 | — |
| Alpine v3.18 | rssh | 2.3.4-r2 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.17 | rssh | 2.3.4-r2 | — |
| Alpine v3.16 | rssh | 2.3.4-r2 | — |
| Alpine v3.15 | rssh | 2.3.4-r2 | — |
| Alpine v3.14 | rssh | 2.3.4-r2 | — |
| Alpine v3.13 | rssh | 2.3.4-r2 | — |
Advisories 3
- DSA-4377-1 rssh - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1650-1 rssh - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3946-1 rssh vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
References
- https://esnet-security.github.io/vulnerabilities/20190115_rssh
- DSA-4377 vendor-advisory
- [debian-lts-announce] 20190130 [SECURITY] [DLA 1650-1] rssh security update mailing-list
- USN-3946-1 vendor-advisory
- FEDORA-2019-e47add6b2b vendor-advisory
- FEDORA-2019-d1487c13ac vendor-advisory
- FEDORA-2019-bfb407659e vendor-advisory
- GLSA-202007-29 vendor-advisory
- 20210526 KL-001-2021-007: CommScope Ruckus IoT Controller Undocumented Account mailing-list
- https://github.com/WlX-33/PoC-for-CVE/blob/main/CVE-2021-33216%2CCVE-2019-1000018/CommScope%20Ruckus%20IoT%20Controller%201.7.1.0%20Undocumented%20Account.txt