CVE-2017-17807

LOW

Linux Kernel < 4.14.6 - Missing Authorization

Title source: rule
STIX 2.1

Description

The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

References (15)

Core 15
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/102301
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3617-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3619-2/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4082
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3617-3/
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3632-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3620-2/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2017/dsa-4073
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3617-2/
Issue Tracking, Mailing List, Release Notes x_refsource_confirm
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3620-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3619-1/

Scores

CVSS v3 3.3
EPSS 0.0006
EPSS Percentile 18.5%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Details

CWE
CWE-862
Status published
Products (1)
linux/linux_kernel < 4.14.6
Published Dec 20, 2017
Tracked Since Feb 18, 2026