PT-2016-7792 · Linux+5 · Linux Kernel+5

Adam Mariš · Published 2016-12-31 · Updated 2019-10-09 · CVE-2016-9604

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.11-rc8

Description A security issue allows root to gain direct access to an internal keyring, such as '.dns resolver' or '.builtin trusted keys', by joining it as its session keyring. This enables root to bypass module signature verification by adding a new public key to the keyring.

Recommendations For Linux kernel versions prior to 4.11-rc8, update to a version 4.11-rc8 or later to resolve the issue.

Fix

Incorrect Permission

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-732

CWE-347

Related Identifiers

ALT-PU-2017-1854

ALT-PU-2018-1991

CESA-2017_1842

CVE-2016-9604

DLA-922-1

MGASA-2017-0136

MGASA-2017-0147

MGASA-2017-0148

RHSA-2017:1842

RHSA-2017:2077

RHSA-2017:2669

RHSA-2017_1842

RHSA-2017_2077

SUSE-SU-2017:1360-1

SUSE-SU-2017:2920-1

USN-3312-1

USN-3312-2

USN-3314-1

USN-3361-1

USN-3422-1

USN-3422-2

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 315

• https://ubuntu.com/security/CVE-2017-0605 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3312-2 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-9604 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0136.html · Security Note
• https://security-tracker.debian.org/tracker/CVE-2016-9604 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-9604 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5576 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7913 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6348 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-9178 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-10208 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-2671 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-9604 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5550 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-2584 · Vendor Advisory