Vulnerability Details : CVE-2020-15780
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.
Exploit prediction scoring system (EPSS) score for CVE-2020-15780
Probability of exploitation activity in the next 30 days: 0.05%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 14 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-15780
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST |
|
6.7
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2020-15780
-
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15780
-
http://www.openwall.com/lists/oss-security/2020/07/30/2
oss-security - UEFI SecureBoot bypass fixes rolled out to kernels below radarMailing List;Third Party Advisory
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https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.7
Release Notes;Vendor Advisory
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https://usn.ubuntu.com/4426-1/
USN-4426-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=75b0cea7bf307f362057cc778efe89af4c615354
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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http://www.openwall.com/lists/oss-security/2020/07/29/3
oss-security - multiple secure boot grub2 and linux kernel vulnerabilitiesMailing List;Third Party Advisory
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https://www.openwall.com/lists/oss-security/2020/06/15/3
oss-security - lockdown bypass on mainline kernel for loading unsigned modulesMailing List;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2020/07/30/3
oss-security - Re: UEFI SecureBoot bypass fixes rolled out to kernels below radarMailing List;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2020/07/20/7
oss-security - Re: Re: lockdown bypass on mainline kernel for loading unsigned modulesMailing List;Patch;Third Party Advisory
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https://git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language-2.sh
american-unsigned-language-2.sh - american-unsigned-language - Disable kernel lockdown using ACPI SSDT injectionPatch;Third Party Advisory
-
https://usn.ubuntu.com/4439-1/
USN-4439-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://usn.ubuntu.com/4425-1/
USN-4425-1: Linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
[security-announce] openSUSE-SU-2020:1153-1: important: Security updateMailing List;Third Party Advisory
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https://usn.ubuntu.com/4440-1/
USN-4440-1: linux kernel vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
[security-announce] openSUSE-SU-2020:1236-1: important: Security updateMailing List;Third Party Advisory
Products affected by CVE-2020-15780
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*