CVE-2020-25643

Aliases:UBUNTU-CVE-2020-25643DEBIAN-CVE-2020-25643
Advisory lineage Upstream: 0 Downstream: 32
Modified
Published: 06 Oct 2020, 00:00
Last modified:04 Aug 2024, 15:40

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.5 HIGH
v2.0 (nvd)
EPSS Score
3.29% LOW
3% probability +2.87%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 Oct 2020, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 15:40
Last Modified
Vulnerability information updated

Description

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Metrics

  • v3.1•HIGH•Score: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:M/Au:S/C:P/I:P/A:C

EPSS Trends

Current EPSS score: 3.29%• Percentile: 88%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • debian•linux

    < 5.8.14-1 | < 5.8.14-1 | < 5.8.14-1 | < 5.8.14-1

  • ubuntu•linux

    all | < 4.4.0-197.229 | < 4.15.0-126.129 | < 5.4.0-56.62

  • ubuntu•linux-aws

    < 4.4.0-1082.86 | < 4.4.0-1118.132 | < 4.15.0-1088.93 | < 5.4.0-1030.31

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1030.31~18.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2031.32 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1088.93~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1100.111~14.04.1 | < 4.15.0-1100.111~16.04.1 | all | < 5.4.0-1032.33

  • ubuntu•linux-azure-4.15

    < 4.15.0-1100.111

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1032.33~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2013.15 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-dell300x

    < 4.15.0-1007.11

  • ubuntu•linux-fips

    < 4.4.0-1051.57 | all | < 4.15.0-1046.53

  • ubuntu•linux-gcp

    < 4.15.0-1088.101~16.04.1 | all | < 5.4.0-1030.32

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1088.101

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1030.32~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke-4.15

    < 4.15.0-1074.79

  • ubuntu•linux-gke-5.4

    < 5.4.0-1030.32~18.04.1

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1005.6

  • ubuntu•linux-hwe

    < 4.15.0-126.129~16.04.1 | all

  • ubuntu•linux-hwe-5.4

    < 5.4.0-56.62~18.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1084.93 | < 4.15.0-1079.81 | < 5.4.0-1028.29

  • ubuntu•linux-lts-xenial

    < 4.4.0-197.229~14.04.1

  • ubuntu•linux-oem

    < 4.15.0-1103.114

  • ubuntu•linux-oem-5.6

    < 5.6.0-1048.52

  • ubuntu•linux-oracle

    < 4.15.0-1059.65~16.04.1 | < 4.15.0-1059.65 | < 5.4.0-1030.32

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    all

  • ubuntu•linux-oracle-5.4

    < 5.4.0-1030.32~18.04.1

  • ubuntu•linux-raspi

    < 5.4.0-1023.26

  • ubuntu•linux-raspi-5.4

    < 5.4.0-1023.26~18.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1142.152 | < 4.15.0-1074.79 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    < 5.4.0-37.42

  • ubuntu•linux-snapdragon

    < 4.4.0-1146.156 | < 4.15.0-1091.100

  • debian•debian_linux

    9.0 | 10.0

  • linux•linux_kernel

    ≥ 2.6.29, < 4.4.238 | ≥ 4.5, < 4.9.238 | ≥ 4.10, < 4.14.200 | ≥ 4.15, < 4.19.148 | ≥ 4.20, < 5.4.68 | ≥ 5.5, < 5.8.12 | 5.9.0:rc1 | 5.9.0:rc2 | 5.9.0:rc3 | 5.9.0:rc4 | 5.9.0:rc5 | 5.9.0:rc6

  • netapp•h410c_firmware

    na

  • opensuse•leap

    15.1 | 15.2

  • redhat•enterprise_linux

    7.0 | 8.0

Showing first 50 affected entries in server-rendered view.

References (18)