A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom "you have new mail" message, leads to code execution in the context of the user who receives the message. If the user affected is privileged, this leads to privilege escalation.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | zsh | 2018-12-06 00:20 | ALAS-2018-1107 |
Amazon Linux 2 - Core | zsh | 2018-05-10 17:23 | ALAS2-2018-1013 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 7.5 | CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H |
NVD | CVSSv2 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |