CVE-2020-15707

CVSS V2 Medium 4.4 CVSS V3 Medium 6.4
Description
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
Overview
  • CVE ID
  • CVE-2020-15707
  • Assigner
  • security@ubuntu.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-07-29T18:15:14
  • Last Modified Date
  • 2021-09-13T14:25:40
Weakness Enumerations
CWE URL
CWE-190 http://cwe.mitre.org/data/definitions/190.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* 1 OR 2.04
cpe:2.3:a:redhat:enterprise_linux_atomic_host:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:suse:suse_linux_enterprise_server:11:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:suse:suse_linux_enterprise_server:15:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:* 1 OR 9.5
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.4
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.5
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory
http://ubuntu.com/security/notices/USN-4432-1 Third Party Advisory
https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html Issue Tracking Vendor Advisory
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass Third Party Advisory
https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Patch Third Party Advisory Vendor Advisory
https://access.redhat.com/security/vulnerabilities/grub2bootloader Third Party Advisory
https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Exploit Third Party Advisory
https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List Third Party Advisory
https://www.debian.org/security/2020/dsa-4735 Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory
https://usn.ubuntu.com/4432-1/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202104-05 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-15707
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15707
History
Created Old Value New Value Data Type Notes
2022-05-10 16:05:54 Added to TrackCVE
2022-12-04 20:25:11 2020-07-29T18:15Z 2020-07-29T18:15:14 CVE Published Date updated
2022-12-04 20:25:11 2021-09-13T14:25:40 CVE Modified Date updated
2022-12-04 20:25:11 Analyzed Vulnerability Status updated
2022-12-04 20:25:11 CWE-190 Weakness Enumeration updated