Auth bypass in Linux Kernel
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (70.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.014 · change: +0.001
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language-2.sh (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/06/15/3 (Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.7 (Release Notes, Vendor Advisory)
- www.openwall.com/lists/oss-security/2020/07/20/7 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/07/29/3 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/07/30/3 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/07/30/2 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4425-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4439-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15780?
- CVE-2020-15780 is a medium-severity vulnerability in Linux Kernel, classified under Missing Authorization. CVSS score: 6.7/10. Published 2020-07-15.
- How severe is CVE-2020-15780?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2020-15780 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.