CVE-2020-15780
Vulnerability Summary
Timeline
Description
An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30.
CVSS Metrics
- v3.1•MEDIUM•Score: 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS Trends
Current EPSS score: 1.37%• Percentile: 71%
Techniques & Countermeasures
- CWE-862•Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Affected Systems
- canonical•ubuntu_linux
16.04 | 18.04 | 20.04
- debian•linux
< 5.7.10-1 | < 5.7.10-1 | < 5.7.10-1 | < 5.7.10-1
- ubuntu•linux
< 4.15.0-112.113 | < 5.4.0-42.46
- ubuntu•linux-aws
< 4.15.0-1079.83 | < 5.4.0-1020.20
- ubuntu•linux-aws-5.0
all
- ubuntu•linux-aws-5.3
< 5.3.0-1032.34~18.04.2
- ubuntu•linux-aws-fips
< 4.15.0-2024.24 | all
- ubuntu•linux-aws-hwe
< 4.15.0-1079.83~16.04.1
- ubuntu•linux-azure
< 4.15.0-1092.102~14.04.1 | < 4.15.0-1092.102~16.04.1 | all | < 5.4.0-1022.22
- ubuntu•linux-azure-4.15
< 4.15.0-1092.102
- ubuntu•linux-azure-5.3
< 5.3.0-1034.35~18.04.1
- ubuntu•linux-azure-edge
all
- ubuntu•linux-azure-fde
all
- ubuntu•linux-azure-fips
< 4.15.0-2006.7 | all
- ubuntu•linux-bluefield
all
- ubuntu•linux-fips
< 4.15.0-1037.42
- ubuntu•linux-gcp
< 4.15.0-1080.90~16.04.1 | all | < 5.4.0-1021.21
- ubuntu•linux-gcp-4.15
< 4.15.0-1080.90
- ubuntu•linux-gcp-5.3
< 5.3.0-1032.34~18.04.1
- ubuntu•linux-gcp-edge
all
- ubuntu•linux-gcp-fips
all
- ubuntu•linux-gke
all
- ubuntu•linux-gke-4.15
< 4.15.0-1066.69
- ubuntu•linux-gke-5.0
< 5.0.0-1045.46
- ubuntu•linux-gke-5.3
< 5.3.0-1032.34~18.04.1
- ubuntu•linux-hwe
< 4.15.0-112.113~16.04.1 | < 5.3.0-64.58~18.04.1
- ubuntu•linux-hwe-5.4
< 5.4.0-42.46~18.04.1
- ubuntu•linux-hwe-edge
all | all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-kvm
< 4.15.0-1071.72 | < 5.4.0-1020.20
- ubuntu•linux-oem
< 4.15.0-1093.103
- ubuntu•linux-oem-5.6
< 5.6.0-1031.32
- ubuntu•linux-oem-osp1
< 5.0.0-1065.70
- ubuntu•linux-oracle
< 4.15.0-1050.54~16.04.1 | < 4.15.0-1050.54 | < 5.4.0-1021.21
- ubuntu•linux-oracle-5.0
all
- ubuntu•linux-oracle-5.3
< 5.3.0-1030.32~18.04.1
- ubuntu•linux-raspi
< 5.4.0-1015.15
- ubuntu•linux-raspi-5.4
< 5.4.0-1015.15~18.04.1
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.15.0-1067.71 | all
- ubuntu•linux-raspi2-5.3
< 5.3.0-1030.32~18.04.2
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
< 5.4.0-30.34 | all
- ubuntu•linux-snapdragon
< 4.15.0-1083.91
- linux•linux_kernel
< 5.7.7
- opensuse•leap
15.1 | 15.2
References (21)
- https://git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language-2.sh
- https://www.openwall.com/lists/oss-security/2020/06/15/3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75b0cea7bf307f362057cc778efe89af4c615354
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.7
- http://www.openwall.com/lists/oss-security/2020/07/20/7
- http://www.openwall.com/lists/oss-security/2020/07/29/3
- http://www.openwall.com/lists/oss-security/2020/07/30/3
- http://www.openwall.com/lists/oss-security/2020/07/30/2
- https://usn.ubuntu.com/4425-1/
- https://usn.ubuntu.com/4439-1/
- https://usn.ubuntu.com/4426-1/
- https://usn.ubuntu.com/4440-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- https://ubuntu.com/security/CVE-2020-15780
- https://ubuntu.com/security/notices/USN-4425-1
- https://ubuntu.com/security/notices/USN-4426-1
- https://ubuntu.com/security/notices/USN-4439-1
- https://ubuntu.com/security/notices/USN-4440-1
- https://www.cve.org/CVERecord?id=CVE-2020-15780
- https://security-tracker.debian.org/tracker/CVE-2020-15780