CVE-2019-3464
First published: Wed Feb 06 2019(Updated: )
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.
Credit: security@debian.org security@debian.org security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/rssh | ||
| Pizzashack Rssh | =2.3.4 | |
| Debian | =8.0 | |
| Debian | =9.0 | |
| Fedora | =29 | |
| Fedora | =30 | |
| Fedora | =31 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =18.10 |
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Reference Links
- http://seclists.org/fulldisclosure/2021/May/78
- http://www.securityfocus.com/bid/106839
- https://lists.debian.org/debian-lts-announce/2019/02/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HO3MDU3AH5SLYBKHH5PJ6PHC63ASIF42/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KR2OHTHMJVV4DO3HDRFQQZ5JENHDJQEN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T42YYNWJZG422GATWAHAEK4A24OKY557/
- https://security.gentoo.org/glsa/202007-29
- https://tracker.debian.org/news/1026713/accepted-rssh-234-5deb9u2-source-amd64-into-stable-embargoed-stable/
- https://usn.ubuntu.com/3946-1/
- https://www.debian.org/security/2019/dsa-4382
- https://launchpad.net/bugs/cve/CVE-2019-3464
- https://security-tracker.debian.org/tracker/CVE-2019-3464
- 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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3464
- https://nvd.nist.gov/vuln/detail/CVE-2019-3464
- https://ubuntu.com/security/CVE-2019-3464
Frequently Asked Questions
What is the severity of CVE-2019-3464?
CVE-2019-3464 is considered a high severity vulnerability due to its potential for arbitrary command execution.
How do I fix CVE-2019-3464?
To fix CVE-2019-3464, it is recommended to update to the latest patched version of rssh that addresses the environment variable sanitization issue.
Which systems are affected by CVE-2019-3464?
CVE-2019-3464 affects multiple versions of rssh on Debian, Fedora, and Ubuntu operating systems.
What are the consequences of exploiting CVE-2019-3464?
Exploiting CVE-2019-3464 can allow an attacker to execute arbitrary shell commands, potentially compromising the system.
Is CVE-2019-3464 a common vulnerability?
CVE-2019-3464 is relatively well-known among the security community due to its impact on systems using rssh as a restricted shell.
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