Description
The Debian initrd script for the cryptsetup package 2:1.7.3-2 and earlier allows physically proximate attackers to gain shell access via many log in attempts with an invalid password.
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 14 | cryptsetup | 2:1.7.3-2 | — |
| Debian 13 | cryptsetup | 2:1.7.3-2 | — |
| Debian 12 | cryptsetup | 2:1.7.3-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | cryptsetup | No fix yet | — |
| Ubuntu 14.04 LTS | cryptsetup | No fix yet | — |
References
- [oss-security] 20161114 CVE-2016-4484: - Cryptsetup Initrd root Shell mailing-list
- http://hmarco.org/bugs/CVE-2016-4484/CVE-2016-4484_cryptsetup_initrd_shell.html
- [oss-security] 20161115 Re: CVE-2016-4484: - Cryptsetup Initrd root Shell - Update: Dracut is also vulnerable mailing-list
- [oss-security] 20161115 Re: [FD] CVE-2016-4484: - Cryptsetup Initrd root Shell mailing-list
- 94315 vdb-entry
- https://gitlab.com/cryptsetup/cryptsetup/commit/ef8a7d82d8d3716ae9b58179590f7908981fa0cb
- [oss-security] 20161116 Re: CVE-2016-4484: - Cryptsetup Initrd root Shell mailing-list