Lucene search

K
ubuntuUbuntuUSN-5357-1
HistoryMar 31, 2022 - 12:00 a.m.

Linux kernel vulnerability

2022-03-3100:00:00
ubuntu.com
93
ubuntu 18.04
ubuntu 16.04
linux kernel
ipsec
buffer overflow
denial of service
arbitrary code
esm
aws
azure
dell
hwe
kvm
snapdragon
unix

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

8.3

Confidence

High

EPSS

0

Percentile

5.1%

Releases

  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud systems
  • linux-dell300x - Linux kernel for Dell 300x platforms
  • linux-hwe - Linux hardware enablement (HWE) kernel
  • linux-kvm - Linux kernel for cloud environments
  • linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors

Details

It was discovered that the IPsec implementation in the Linux kernel did not
properly allocate enough memory when performing ESP transformations,
leading to a heap-based buffer overflow. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code.

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

8.3

Confidence

High

EPSS

0

Percentile

5.1%