Vulnerability CVE-2020-10751


Published: 2020-05-26

Description:
A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing.

Type:

CWE-345

(Insufficient Verification of Data Authenticity)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.6/10
4.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Redhat -> Enterprise linux server 
Kernel -> Selinux 

 References:
http://www.openwall.com/lists/oss-security/2020/05/27/3
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10751
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fb73974172ffaaf57a7c42f35424d9aece1a5af6
https://lore.kernel.org/selinux/CACT4Y+b8HiV6KFuAPysZD=5hmyO4QisgxCKi4DHU3CfMPSP=yg@mail.gmail.com/
https://www.openwall.com/lists/oss-security/2020/04/30/5

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