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.
References
Link | Resource |
---|---|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f | Patch Vendor Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604 | Issue Tracking Third Party Advisory |
https://bugzilla.novell.com/show_bug.cgi?id=1035576 | Issue Tracking Third Party Advisory |
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html | Third Party Advisory |
https://access.redhat.com/errata/RHSA-2017:2669 | Third Party Advisory |
https://access.redhat.com/errata/RHSA-2017:2077 | Third Party Advisory |
https://access.redhat.com/errata/RHSA-2017:1842 | Third Party Advisory |
http://www.securityfocus.com/bid/102135 | Third Party Advisory VDB Entry |
Configurations
Configuration 1 (hide)
|
Information
Published : 2018-07-11 06:29
Updated : 2019-10-09 16:20
NVD link : CVE-2016-9604
Mitre link : CVE-2016-9604
JSON object : View
CWE
CWE-347
Improper Verification of Cryptographic Signature
Products Affected
linux
- linux_kernel