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CVE-2018-13405

36
FAUCET Score

CVE-2018-13405 is a local privilege escalation vulnerability in the Linux kernel (through version 3.16) affecting products like Canonical, Debian, and Red Hat. It allows a local user to create files with unintended group ownership within an SGID directory, even if they are not a member of that group. This can lead to privilege escalation by making the created file executable and SGID. The vulnerability has a CVSS score of 7.8 (HIGH), indicating a low attack complexity and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or Metasploit/Nuclei modules, an ExploitDB entry (EDB-45033) exists, and there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.01%
Probability of exploitation in next 30 days
EPSS Percentile
59.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45033 · Jul 16, 2018
This CVE's current EPSS score of 0.0101 is in the 92nd percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-754.12.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.6 Advanced Update SupportFixed in: kernel-0:2.6.32-504.80.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-957.rt56.910.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-957.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Advanced Update SupportFixed in: kernel-0:3.10.0-327.83.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Telco Extended Update SupportFixed in: kernel-0:3.10.0-327.83.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Update Services for SAP SolutionsFixed in: kernel-0:3.10.0-327.83.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Advanced Update SupportFixed in: kernel-0:3.10.0-514.71.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Telco Extended Update SupportFixed in: kernel-0:3.10.0-514.71.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Update Services for SAP SolutionsFixed in: kernel-0:3.10.0-514.71.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Extended Update SupportFixed in: kernel-0:3.10.0-693.58.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.5 Extended Update SupportFixed in: kernel-0:3.10.0-862.41.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-693.58.1.rt56.652.el6rt
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2018-13405Important

kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members

Jul 5, 2018

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
openwall.com / lists/oss-security/2018/07/13/2
Mailing ListPatchThird Party Advisory
access.redhat.com / errata/RHSA-2018:2948
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3083
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3096
Third Party Advisory
access.redhat.com / errata/RHSA-2019:0717
Third Party Advisory
access.redhat.com / errata/RHSA-2019:2476
Third Party Advisory
access.redhat.com / errata/RHSA-2019:2566
Third Party Advisory
access.redhat.com / errata/RHSA-2019:2696
Third Party Advisory
access.redhat.com / errata/RHSA-2019:2730
Third Party Advisory
access.redhat.com / errata/RHSA-2019:4159
Third Party Advisory
access.redhat.com / errata/RHSA-2019:4164
Third Party Advisory
github.com / torvalds/linux/commit/0fa3ecd87848c9c93c2c828ef4c3a8ca36ce46c7
PatchThird Party Advisory
git.kernel.org / pub/scm/linux/kernel/git/tip/tip.git/commit
Mailing ListPatchVendor Advisory
lists.debian.org / debian-lts-announce/2018/08/msg00014.html
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HRBNBX73SAFKQWBOX76SLMWPTKJPVGEJ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MTKKIAUMR5FAYLZ7HLEPOXMKAAE3BYBQ
support.f5.com / csp/article/K00854051
Third Party Advisory
twitter.com / grsecurity/status/1015082951204327425
Third Party Advisory
usn.ubuntu.com / 3752-1
Third Party Advisory
usn.ubuntu.com / 3752-2
Third Party Advisory
usn.ubuntu.com / 3752-3
Third Party Advisory
usn.ubuntu.com / 3753-1
Third Party Advisory
usn.ubuntu.com / 3753-2
Third Party Advisory
usn.ubuntu.com / 3754-1
Third Party Advisory
debian.org / security/2018/dsa-4266
Third Party Advisory
exploit-db.com / exploits/45033
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/106503
Broken Link