CVE-2018-13405 (GCVE-0-2018-13405)

Vulnerability from cvelistv5 – Published: 2018-07-06 14:00 – Updated: 2024-08-05 09:00
VLAI
Summary
The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://usn.ubuntu.com/3752-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3083 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3752-3/ vendor-advisoryx_refsource_UBUNTU
https://twitter.com/grsecurity/status/10150829512… x_refsource_MISC
https://usn.ubuntu.com/3753-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3754-1/ vendor-advisoryx_refsource_UBUNTU
http://openwall.com/lists/oss-security/2018/07/13/2 x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHAT
http://git.kernel.org/cgit/linux/kernel/git/torva… x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
https://www.exploit-db.com/exploits/45033/ exploitx_refsource_EXPLOIT-DB
https://www.debian.org/security/2018/dsa-4266 vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/106503 vdb-entryx_refsource_BID
https://usn.ubuntu.com/3752-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3096 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3753-1/ vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/0fa3ecd8… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:0717 vendor-advisoryx_refsource_REDHAT
https://support.f5.com/csp/article/K00854051 x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:2476 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2566 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2696 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2730 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:4159 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:4164 vendor-advisoryx_refsource_REDHAT
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https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
Date Public
2018-07-06 00:00
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-28T11:09:08+00:00",
      "cve": "CVE-2018-13405",
      "id": "CVE-2018-13405",
      "initial_release_date": "2018-07-05T00:00:00+00:00",
      "product_status:fixed": "854",
      "product_status:known_affected": "13",
      "product_status:known_not_affected": "41",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-13405.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.