CVE-2020-4788
Vulnerability Summary
Timeline
Description
IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.
CVSS Metrics
- v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- v3.0•MEDIUM•Score: 5.1CVSS:3.0/PR:N/C:H/AV:L/AC:H/S:U/A:N/I:N/UI:N/E:U/RC:C/RL:O
- v3.0•MEDIUM•Score: 5.1CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- v2.0•LOW•Score: 1.9AV:L/AC:M/Au:N/C:P/I:N/A:N
EPSS Trends
Current EPSS score: 0.39%• Percentile: 33%
Affected Systems
- debian•linux
< 5.9.11-1 | < 5.9.11-1 | < 5.9.11-1 | < 5.9.11-1
- ubuntu•linux
all | < 4.4.0-197.229 | < 4.15.0-126.129 | < 5.4.0-56.62
- ubuntu•linux-aws
< 4.4.0-1083.87 | < 4.4.0-1119.133 | < 5.4.0-1032.33
- ubuntu•linux-aws-5.0
all
- ubuntu•linux-aws-5.3
all
- ubuntu•linux-aws-5.4
< 5.4.0-1032.33~18.04.1
- ubuntu•linux-aws-fips
< 4.15.0-2033.34 | all | < 5.4.0-1069.73+fips2
- ubuntu•linux-azure
< 4.15.0-1102.113~14.04.1 | all | < 5.4.0-1034.35
- ubuntu•linux-azure-5.3
all
- ubuntu•linux-azure-5.4
< 5.4.0-1034.35~18.04.1
- 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
< 4.15.0-2015.17 | all | < 5.4.0-1073.76+fips1
- ubuntu•linux-bluefield
all
- ubuntu•linux-dell300x
< 4.15.0-1009.13
- ubuntu•linux-fips
< 4.4.0-1051.57 | all | < 4.15.0-1048.55
- ubuntu•linux-gcp
all | < 5.4.0-1032.34
- ubuntu•linux-gcp-5.3
all
- ubuntu•linux-gcp-5.4
< 5.4.0-1032.34~18.04.1
- ubuntu•linux-gcp-edge
all
- ubuntu•linux-gcp-fips
all | < 5.4.0-1067.71~20.04.1
- ubuntu•linux-gke
all
- ubuntu•linux-gke-5.4
< 5.4.0-1032.34~18.04.1
- ubuntu•linux-gkeop-5.4
< 5.4.0-1007.8~18.04.1
- ubuntu•linux-hwe
< 4.15.0-126.129~16.04.1
- ubuntu•linux-hwe-5.4
< 5.4.0-56.62~18.04.1
- ubuntu•linux-hwe-5.8
< 5.8.0-31.33~20.04.1
- ubuntu•linux-hwe-edge
all | all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-kvm
< 4.4.0-1085.94 | < 5.4.0-1028.29
- ubuntu•linux-lts-xenial
< 4.4.0-197.229~14.04.1
- ubuntu•linux-oracle
< 5.4.0-1032.34
- ubuntu•linux-oracle-5.0
all
- ubuntu•linux-oracle-5.3
all
- ubuntu•linux-oracle-5.4
< 5.4.0-1033.35
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.4.0-1143.153 | all
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
all
- ubuntu•linux-snapdragon
< 4.4.0-1147.157
- fedoraproject•fedora
32 | 33
- ibm•aix
7.1 | 7.2 | 7.1.0 | 7.1.5 | 7.2.0 | 7.2.3 | 7.2.4 | 7.2.5
- ibm•vios
3.1 | 3.1.0 | 3.1.1 | 3.1.2
- oracle•communications_cloud_native_core_binding_support_function
22.1.3
- oracle•communications_cloud_native_core_network_exposure_function
22.1.1
- oracle•communications_cloud_native_core_policy
22.2.0
References (16)
- https://www.ibm.com/support/pages/node/6370729
- https://exchange.xforce.ibmcloud.com/vulnerabilities/189296
- http://www.openwall.com/lists/oss-security/2020/11/20/3
- http://www.openwall.com/lists/oss-security/2020/11/23/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://ubuntu.com/security/CVE-2020-4788
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dda3f4252e6c8b833a2ef164afd3da9808d0f07c
- https://ubuntu.com/security/notices/USN-4657-1
- https://ubuntu.com/security/notices/USN-4658-1
- https://ubuntu.com/security/notices/USN-4659-1
- https://ubuntu.com/security/notices/USN-4660-1
- https://ubuntu.com/security/notices/USN-4681-1
- https://www.cve.org/CVERecord?id=CVE-2020-4788
- https://security-tracker.debian.org/tracker/CVE-2020-4788