CVE-2020-10773

Aliases:UBUNTU-CVE-2020-10773DEBIAN-CVE-2020-10773
Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 10 Sept 2020, 16:07
Last modified:04 Aug 2024, 11:14

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
v3.1 (cve.org)
EPSS Score
0.37% LOW
0% probability +0.35%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

10 Sept 2020, 16:07
Published
Vulnerability first disclosed
04 Aug 2024, 11:14
Last Modified
Vulnerability information updated

Description

A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.37%• Percentile: 30%

Techniques & Countermeasures

  • CWE-626•Null Byte Interaction Error (Poison Null Byte)

    The product does not properly handle null bytes or NUL characters when passing data between different representations or components.

Affected Systems

  • debian•linux

    < 5.3.9-1 | < 5.3.9-1 | < 5.3.9-1 | < 5.3.9-1

  • ubuntu•linux

    all | < 4.4.0-170.199 | < 4.15.0-72.81

  • ubuntu•linux-aws

    < 4.4.0-1059.63 | < 4.4.0-1099.110 | < 4.15.0-1056.58

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1056.58~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1064.69~14.04.1 | < 4.15.0-1064.69 | all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1026.31 | all

  • ubuntu•linux-gcp

    < 4.15.0-1050.53 | all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1049.52

  • ubuntu•linux-gke-5.0

    < 5.0.0-1027.28~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-72.81~16.04.1 | < 5.3.0-26.28~18.04.1

  • ubuntu•linux-hwe-edge

    all | < 5.3.0-24.26~18.04.2

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1063.70 | < 4.15.0-1051.51

  • ubuntu•linux-lts-xenial

    < 4.4.0-170.199~14.04.1

  • ubuntu•linux-oem

    < 4.15.0-1065.75

  • ubuntu•linux-oem-osp1

    < 5.0.0-1033.38

  • ubuntu•linux-oracle

    < 4.15.0-1030.33~16.04.1 | < 4.15.0-1030.33

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    all

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1126.135 | < 4.15.0-1052.56 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1130.138 | < 4.15.0-1069.76

  • linux•linux_kernel

    5.4.0:rc6

  • [unknown]•kernel

    kernel-5.4-rc6

References (6)