Vulnerability CVE-2016-9604
Published: 2018-07-11

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.

Type:

CWE-347

 (Improper Verification of Cryptographic Signature)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Linux -> Linux kernel 

 References:
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html
http://www.securityfocus.com/bid/102135
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:2669
https://bugzilla.novell.com/show_bug.cgi?id=1035576
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f
Copyright 2024, cxsecurity.com

 

Back to Top