CVE-2017-17807

 

Published at: - 21-12-2017 12:29

Last modified: - 26-10-2022 01:44

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

 

Verification logic

 

Reference

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6
• https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b
• DSA-4073-Third Party Advisory
• 102301-Third Party Advisory, VDB Entry
• DSA-4082-
• [debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update-
• USN-3617-2-
• USN-3617-1-
• USN-3620-2-
• USN-3620-1-
• USN-3619-1-
• USN-3617-3-
• USN-3619-2-
• USN-3632-1-

 

Keywords

NVD

 

CVE-2017-17807

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures