| Revision Date: | 2018-07-06 | Version: | 1 | | Title: | CVE-2018-13405 on Ubuntu 18.10 (cosmic) - medium. | | Description: | The inode_init_owner function in fs/inode.c in the Linux kernel through 4.17.4 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID. It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges.
| | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2018-13405
| | Platform(s): | Ubuntu 18.10
| Product(s): | | | Definition Synopsis | | Ubuntu 18.10 (cosmic) is installed. AND Package Information
linux package in cosmic, is related to the CVE in some way and has been fixed (note: '4.17.0-6.7').
OR linux-aws package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1020.20').
OR linux-azure package in cosmic, is related to the CVE in some way and has been fixed (note: '4.18.0-1003.3').
OR linux-gcp package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1018.19').
OR linux-kvm package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1020.20').
OR linux-meta package in cosmic, is related to the CVE in some way and has been fixed (note: '4.17.0-6.7').
OR linux-meta-aws package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1020.20').
OR linux-meta-azure package in cosmic, is related to the CVE in some way and has been fixed (note: '4.18.0-1003.3').
OR linux-meta-gcp package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1018.19').
OR linux-meta-kvm package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1020.20').
OR linux-meta-oem package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1017.20').
OR linux-meta-raspi2 package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1021.23').
OR linux-oem package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1017.20').
OR linux-raspi2 package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1021.23').
OR linux-signed package in cosmic, is related to the CVE in some way and has been fixed (note: '4.17.0-6.7').
OR linux-signed-azure package in cosmic, is related to the CVE in some way and has been fixed (note: '4.18.0-1003.3').
OR linux-signed-gcp package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1018.19').
OR linux-signed-oem package in cosmic, is related to the CVE in some way and has been fixed (note: '4.15.0-1017.20').
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