CVE-2019-3463
Insufficient sanitization of arguments 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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Insufficient sanitization of arguments 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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.87% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-88
- Affected
- pizzashack/rssh · debian/debian linux · fedoraproject/fedora · canonical/ubuntu linux
- Source
- security@debian.org
EPSS 4.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://seclists.org/fulldisclosure/2021/May/78Mailing List, Not Applicable, Third Party Advisory
- http://www.securityfocus.com/bid/106839Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/02/msg00007.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HO3MDU3AH5SLYBKHH5PJ6PHC63ASIF42/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KR2OHTHMJVV4DO3HDRFQQZ5JENHDJQEN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T42YYNWJZG422GATWAHAEK4A24OKY557/
- https://security.gentoo.org/glsa/202007-29Third Party Advisory
- https://tracker.debian.org/news/1026713/accepted-rssh-234-5deb9u2-source-amd64-into-stable-embargoed-stable/Third Party Advisory
- https://usn.ubuntu.com/3946-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4382Third Party Advisory
- http://seclists.org/fulldisclosure/2021/May/78Mailing List, Not Applicable, Third Party Advisory
- http://www.securityfocus.com/bid/106839Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/02/msg00007.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HO3MDU3AH5SLYBKHH5PJ6PHC63ASIF42/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KR2OHTHMJVV4DO3HDRFQQZ5JENHDJQEN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T42YYNWJZG422GATWAHAEK4A24OKY557/
- https://security.gentoo.org/glsa/202007-29Third Party Advisory
- https://tracker.debian.org/news/1026713/accepted-rssh-234-5deb9u2-source-amd64-into-stable-embargoed-stable/Third Party Advisory
- https://usn.ubuntu.com/3946-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4382Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.