A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do a symbolic link resolution in the aforementioned path. 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 | 2018-04-05 16:13 | ALAS2-2018-986 |
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 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
NVD | CVSSv3 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |