Vulnerability Monitor

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CVE-2020-15707


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.


Published

2020-07-29T18:15:14.640

Last Modified

2024-11-21T05:06:04.027

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: LOCAL
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

3.4

Impact Score

6.4

Weaknesses
  • Type: Secondary
    CWE-362
  • Type: Primary
    CWE-190
    CWE-362

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application gnu grub2 ≤ 2.04 Yes
Application redhat enterprise_linux_atomic_host - Yes
Application redhat openshift_container_platform 4.0 Yes
Operating System redhat enterprise_linux 7.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System microsoft windows_10 - Yes
Operating System microsoft windows_10 1607 Yes
Operating System microsoft windows_10 1709 Yes
Operating System microsoft windows_10 1803 Yes
Operating System microsoft windows_10 1809 Yes
Operating System microsoft windows_10 1903 Yes
Operating System microsoft windows_10 1909 Yes
Operating System microsoft windows_10 2004 Yes
Operating System microsoft windows_8.1 - Yes
Operating System microsoft windows_rt_8.1 - Yes
Operating System microsoft windows_server_2012 - Yes
Operating System microsoft windows_server_2012 r2 Yes
Operating System microsoft windows_server_2016 - Yes
Operating System microsoft windows_server_2016 1903 Yes
Operating System microsoft windows_server_2016 1909 Yes
Operating System microsoft windows_server_2016 2004 Yes
Operating System microsoft windows_server_2019 - Yes
Operating System canonical ubuntu_linux 14.04 Yes
Operating System canonical ubuntu_linux 16.04 Yes
Operating System canonical ubuntu_linux 18.04 Yes
Operating System canonical ubuntu_linux 20.04 Yes
Operating System debian debian_linux 10.0 Yes
Operating System opensuse leap 15.1 Yes
Operating System opensuse leap 15.2 Yes
Operating System suse suse_linux_enterprise_server 11 Yes
Operating System suse suse_linux_enterprise_server 12 Yes
Operating System suse suse_linux_enterprise_server 15 Yes
Application netapp active_iq_unified_manager ≥ 9.5 Yes

References