kernel security
At a glance
- Source
- NVD
- EPSS
- EPSS 0.27 % · percentile 19 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.
Weaknesses (CWE)
- CWE-732 — Incorrect Permission Assignment for Critical Resource
- CWE-347 — Improper Verification of Cryptographic Signature
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f
- https://access.redhat.com/errata/RHSA-2017:2669
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604
- https://bugzilla.novell.com/show_bug.cgi?id=1035576
- http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html
- http://www.securityfocus.com/bid/102135
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:1842
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | redhat |
| CVSS 3.0 | MEDIUM 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.0 | MEDIUM 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2016-10408
- GCVE · GCVE-0-2016-9604
CERT-FR advisories
- CERTFR-2017-AVI-390 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2017-AVI-307 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2017-AVI-287 — Multiples vulnérabilités dans le noyau Linux de RedHat · cert.ssi.gouv.fr
- CERTFR-2017-AVI-233 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2017-AVI-169 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2017-AVI-162 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≤ 4.11cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| kernel · security | affected kernel 4.11-rc8 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |