8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.005 Low
EPSS
Percentile
76.6%
Issue Overview:
A flaw was found in the Linux kernel’s implementation of RDS over TCP. A system that has the rds_tcp kernel module loaded (either through autoload via local process running listen(), or manual loading) could possibly cause a use after free (UAF) in which an attacker who is able to manipulate socket state while a network namespace is being torn down. This can lead to possible memory corruption and privilege escalation. (CVE-2019-11815)
Affected Packages:
kernel
Issue Correction:
Run yum update kernel and reboot the instance to update your system.
New Packages:
i686:
kernel-tools-devel-4.14.114-83.126.amzn1.i686
kernel-headers-4.14.114-83.126.amzn1.i686
kernel-tools-4.14.114-83.126.amzn1.i686
perf-debuginfo-4.14.114-83.126.amzn1.i686
kernel-tools-debuginfo-4.14.114-83.126.amzn1.i686
kernel-debuginfo-common-i686-4.14.114-83.126.amzn1.i686
kernel-devel-4.14.114-83.126.amzn1.i686
kernel-debuginfo-4.14.114-83.126.amzn1.i686
kernel-4.14.114-83.126.amzn1.i686
perf-4.14.114-83.126.amzn1.i686
src:
kernel-4.14.114-83.126.amzn1.src
x86_64:
kernel-debuginfo-4.14.114-83.126.amzn1.x86_64
kernel-devel-4.14.114-83.126.amzn1.x86_64
kernel-debuginfo-common-x86_64-4.14.114-83.126.amzn1.x86_64
kernel-headers-4.14.114-83.126.amzn1.x86_64
perf-4.14.114-83.126.amzn1.x86_64
perf-debuginfo-4.14.114-83.126.amzn1.x86_64
kernel-tools-devel-4.14.114-83.126.amzn1.x86_64
kernel-tools-4.14.114-83.126.amzn1.x86_64
kernel-tools-debuginfo-4.14.114-83.126.amzn1.x86_64
kernel-4.14.114-83.126.amzn1.x86_64
Red Hat: CVE-2019-11815
Mitre: CVE-2019-11815
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.005 Low
EPSS
Percentile
76.6%